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.
[[-131, -154, -136, -30, 86, -174], [-176, -154, 11, -36, -99, 18], [-5, -57, 82, -116, -42], [-20, 59, -7, -55, -29]]