Africa’s richest man, Aliko Dangote, has reached a new milestone in his financial empire. Dangote’s net worth climbed to $30 billion as of Oct. 23, a$2.16 billion gain since the start of the year, according to Bloomberg’s Billionaires Index and Business Insider. The index shows that Dangote’s wealth recently grew by another $430 million, pushing him over the coveted$30 billion threshold. Just a few weeks ago, his fortune stood at $29.6 billion, and as of yesterday, he was only$200 million short of reac ...