1. Cream butter and sugar.
2. Add eggs, one at a time, beating well after each.
3. Sift dry ingredients and add to creamed mixture.
4. Fold in banana, pineapple, coconut and nuts. Pour mixture into a greased and floured loaf pan.
5. Bake at 350 degrees for 50-60 minutes.
6. Cool in pan 10 minutes, remove to wire rack.