The phrase "a source of fortunes" is correct and usable in written English.
It can be used to describe something that generates wealth or success, often in a metaphorical sense.
Example: "The new technology proved to be a source of fortunes for the startup, attracting investors and customers alike."
Alternatives: "a wellspring of wealth" or "a generator of riches".
His business includes companies in the mining industry; while certain of them have been accused of mishandling toxic waste, that is not a source of his fortune and may be a financial liability for them.
The Books of The Times review in Weekend on Sept. 16, about "The Last Playboy: The High Life of Porfirio Rubirosa," by Shawn Levy, misidentified a source of the fortune inherited by Doris Duke, one of Rubirosa's wives.
On Tuesday, the pope is expected to visit the Virgin of Charity of Cobre, a tiny wooden icon revered by Cubans of all faiths as a source of good fortune, a gesture widely seen as intended to shore up popular devotion on the island.
These guardians become a source of knowledge and good fortune for the individual.
While nearly all industries felt drops in total wealth, manufacturing, long the biggest source of fortunes in China, got hit a bit harder as the number of listees from that sector fell to 72 from 79 and their average net worth dropped to $1.8 billion from $2.1 billion.
But perhaps more noxiously, a culture was generated in which investment banking seemed smart, charismatic and the source of fortunes.
And throughout her adulthood, it was a source of power, fame, friends and fortune for her and her husband, Philip.
Agricultural commodities such as rubber, timber and palm oil are the biggest source of fortunes.
"There have been enormous changes in chair designs," said Mr. Kennedy, 47, who runs one of the world's largest producers of trade and consumer shows, itself a source of his famous family's good fortune.
He had become a source of hope to everyone else, his good fortune reminding them that even in these bleak times, it was still possible to find a decent job.
