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Vo = 22.6 m/s[60o].
Xo = 22.6*Cos60 = 11.3 m/s.
Yo = 22.6*sin60 = 19.6 m/s.
Y = Yo + g*Tr = 0 @ Apex.
19.6 - 9.8*Tr = 0.
Tr = 2.0 s. = Rise time or time to reach
apex.
Tf = Tr = 2.0 s. = Fall time.
Range = Xo*(Tr+Tf) = 11.3m/s * 4s. =
45.2 m.
Note: Your procedure is correct, but you
made a mistake in step #1 which threw all of your answer off.