What is the first three least common multiples of 4 9 and 12?

Answer 1

-- There can only be one "least" of anything.

-- The least common multiple of 4, 9, and 12 is 36.

-- The next larger one is 72.

-- The next larger one after 72 is 108.

-- Every multiple of 36 is another common multiple of 4, 9, and 12.

There are an infinite number of them.

Answer 2

36, 72, 108