#3. Mike Adenuga
Sixty-six years old Adenugu is Africa’s third-richest man, according to Forbes with a net worth of $7.7 billion.
Adenuga’s ranking on the continent makes him Nigeria’s second richest man.
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He built his fortune in telecom and oil production.
An MBA holder from Pace University in New York, Adenuga made his first million at age 26 selling lace and distributing soft drinks.