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.
[[-1, -72, 38, -139, -28], [-124, -160, -129, 56, -82, 69, -168], [-19, -77, -71]]