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.
[[99, -42, 80], [77, 48, -100, -136, -69], [25, -124, -20, 90, -90, -119], [25, 91], [-79, 49, -48]]