In this task, you are given a list. This list contains many lists of integers. The list is several items written within a []. Your task is to find the maximum number among the members of each inner list. The output should be a list comprised of the maximums with the same order as the internal lists.
[[-161, 29, 78], [-174, 22, 8, -157, 9, -169, -47], [15, -19], [98, 64]]