36-year-old Mark Zuckerberg is the World's Fourth Richest Man with a net worth of $87.9 billion

36-year-old Mark Zuckerberg is the World's Fourth Richest Man with a net worth of $87.9 billion.

He presides over the World's Biggest Online Community as the owner of Facebook (2.6 billion users), WhatsApp (2 billion users), Messenger (1.3 billion users) & Instagram (1 billion).

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