Finding the Fourth Proportional to 158,520.50, 218,758.29 and 91,452.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,520.50 : 218,758.29 = 91,452.50 : x
2. Step 2: Convert to fraction form
   158,520.50/218,758.29 = 91,452.50/x
3. Step 3: Cross multiply
   158,520.50x = 218,758.29 × 91,452.50
4. Step 4: Simplify right side
   158,520.50x = 20,005,992,516.23
5. Step 5: Solve for x
   x = 20,005,992,516.23/158,520.50
6. Step 6: Final answer
   x = 126,204.45