Random Riddle: A Fox, A Goose And A Sack Of Corn

A man went on a trip with a fox, a goose and a sack of corn. He came upon a stream which he had to cross and found a tiny boat to use to cross the stream. He could only take himself and one other – the fox, the goose, or the corn – one at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How does he get all safely over the stream?
 
Random Riddle: A Fox, A Goose And A Sack Of Corn