#4- Birdman, $100 million . . . in addition to being a rapper, he's the founder of Cash Money records, which represents Lil Wayne, Nicki Minaj and Drake.
WEST HOLLYWOOD, CA - FEBRUARY 12: Rapper and co-CEO of Cash Money Records Bryan "Birdman" Williams arrives at the Cash Money Records Annual Pre-Grammy Awards Party at The Lot on February 12, 2011 in West Hollywood, California. (Photo by Amanda Edwards/Getty Images)