Joe Raedle / Getty The Mega Millions lottery reached its fourth-largest jackpot in history last week at $450 million. The sole winner is 20-year-old Shane Missler, who announced his win on Facebook with three words: "Oh. My. God." Missler is a Florida resident and is taking the lump sum of nearly $282 million. A 20-year-old Florida man became an instant multi-millionaire last Friday upon discovering he won the $450 million Mega Millions jackpot. "Oh.