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.
[[-176, 36, 94, 7, 55, 29], [-66, 24, -23, -199, -43, -40], [-99, -187, -132, -129, 12]]