Nope. According to the article:

-76% are 35-65 (let’s call that middle-aged just to keep things simple).

-Three out of four are male (let’s call that 75%, which is likely just an approximation).

-68% are white.

Assuming these factors are not correlated (i.e. men are not much more likely to be middle aged or white, for instance), then that works out to about 39% meeting all three criteria.

Better mathematical comprehension, please.