Instructions
Go as far right as you can without leaving the screen. Jump onto the second-lowest branch on the tree in this area to receive a 5-dollar bill.
Go back the the middle of the screen and talk to the gardener with the shears. Accept his request for a drink and go to the General Store. Purchase a Sports Nectar drink with the $5 you found in the tree.
Take the drink the the gardener, who will give you his gardening shears in exchange for the drink.
Go to the man in the balloon. He is located at the top of the lighthouse, on the left side of the screen. Go near the rope and click "Use" on the shears. The balloon will float away.