When Macbeth is finally killed the prophesy of none women born shall harm fulfilled because macbeths killer?

The prophesy of "none of woman born" was fulfilled because Macbeth's killer, Macduff, was born via Caesarean section. This meant that he was not born in the traditional sense of emerging from his mother's womb, but rather was surgically removed. As such, he was not considered to be "of woman born," and thus was able to fulfill the prophesy and kill Macbeth.