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.
[[-113, 92], [-172, -41, 61, -100, 53, 33, 42], [-67, -78], [12, 76, 17], [47, -61, 51, -46, -60, 23, -140]]