Finding the Fourth Proportional to 90,585.00, 135,729.53 and 55,057.18

Step by Step Solution

1. Step 1: Write the proportion equation
   90,585.00 : 135,729.53 = 55,057.18 : x
2. Step 2: Convert to fraction form
   90,585.00/135,729.53 = 55,057.18/x
3. Step 3: Cross multiply
   90,585.00x = 135,729.53 × 55,057.18
4. Step 4: Simplify right side
   90,585.00x = 7,472,885,124.32
5. Step 5: Solve for x
   x = 7,472,885,124.32/90,585.00
6. Step 6: Final answer
   x = 82,495.84