I zi - 84560
II zi - 84560 x 2 = 169120
III zi - 1/4(84560 x 2) = 1/4 x 169120 = 42280
IV zi - 84560 - 1/4(84560 x 2) = 84560 - 42280 = 42280
total = 84560 + 84560 x 2 + 1/4(84560 x 2) + [84560 - 1/4(84560 x 2)] =
= 84560 + 169120 + 42280 +42280 = 338240