'bolstered it' is correct and usable in written English.
It is usually used to describe an action taken to make something stronger or more secure. For example, "He put extra padding in the box to bolster it against any damage during shipment."
Apple may have bolstered it recently, but if it continues to grow at its crazy rate, we're going to see the same issues pop up again and again.
This emphasis on the environment hasn't sabotaged Costa Rica's economy but has bolstered it.
While American scholarship has undercut the U.S. moral position, Japanese historical research has bolstered it.
Ramirez may have been the engine driving the offense, Gonzalez the professional run producer who bolstered it, and Kershaw and Greinke one of baseball's best starting tandems.
Mr. Paulson seems to be betting that the financial system — bolstered, it must be said, by those special credit lines — can handle the shock of a Lehman failure.
If the Fed is aiming to boost equity prices so that consumer confidence is bolstered, it logically follows that the bank is happy for share prices to be above their natural level.
But if the Socialist-led coalition does well that would bolster it in its own demand for early elections.The key battleground is Tirana.
The deactivation of the 17th Airborne Division meant that the 13th acquired several combat units from that division to bolster it for its envisioned action in Japan.
Some pundits see ulterior motives as France is staging its own bid for the 2024 Olympics and could bolster it by seeming tough on corruption.
For its part, AngloGold will look for another acquisition to help bolster it as the gold industry continues to consolidate.
Or they could help bolster it.
