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.
[[10, -121, -54, -1, -69, -181], [83, -37, -173, -81, -42], [-117, 86, -6, -54, -21], [-171, 22, -69]]