Finding the Fourth Proportional to 90,502.10, 135,612.72 and 34,312.00

Step by Step Solution

1. Step 1: Write the proportion equation
   90,502.10 : 135,612.72 = 34,312.00 : x
2. Step 2: Convert to fraction form
   90,502.10/135,612.72 = 34,312.00/x
3. Step 3: Cross multiply
   90,502.10x = 135,612.72 × 34,312.00
4. Step 4: Simplify right side
   90,502.10x = 4,653,143,309.61
5. Step 5: Solve for x
   x = 4,653,143,309.61/90,502.10
6. Step 6: Final answer
   x = 51,414.75