Finding the Fourth Proportional to 90,300.52, 135,401.46 and 71,700.04

Step by Step Solution

1. Step 1: Write the proportion equation
   90,300.52 : 135,401.46 = 71,700.04 : x
2. Step 2: Convert to fraction form
   90,300.52/135,401.46 = 71,700.04/x
3. Step 3: Cross multiply
   90,300.52x = 135,401.46 × 71,700.04
4. Step 4: Simplify right side
   90,300.52x = 9,708,290,098.06
5. Step 5: Solve for x
   x = 9,708,290,098.06/90,300.52
6. Step 6: Final answer
   x = 107,510.90