By Caroline Gaspich Former FOX chairman Rupert Murdoch, 92, has announced his engagement to his girlfriend Elena Zhukova, 62, with plans to wed this upcoming summer. The pair, who share a stark 30-year age difference, have already sent out invitations for their upcoming ceremony which is set to be held in June at Rupert’s grand California estate and vineyard. The pair first sparked their romance last summer after it was revealed Rupert’s previous engagement to former police chaplain Ann Lesley Smith was called off just two weeks after they made the announcement. We’ll be bringing you the very …