What needs to happen for Macbeth to receive the third title the witches mention?

12345678910
onetwothreefourfivesixseveneightnineten

11121314151617181920
eleventwelvethirteenfourteenfifteensixteenseventeeneighteennineteentwenty
21 to 99
Join these:

2030405060708090
twentythirtyfortyfiftysixtyseventyeightyninety
to these:

123456789
-one-two-three-four-five-six-seven-eight-nine
ariel says forty four

Note that forty does not have a u but four does!

Examples:

53 fifty-three
60 sixty
72 seventy-two