1 can (46 oz.) pineapple juice, chilled
1 can (46 oz.) orange-grapefruit juice, chilled
2 qts. carbonated lemon-lime beverage, chilled
1 pt. lemon or lime sherbet

In large punch bowl, stir together juices and carbonated beverage. Spoon sherbet into bowl. Serve immediately. 38 servings (1/2 cup each).