Finding the Fourth Proportional to 129,025.98, 193,565.89 and 65,020.12

Step by Step Solution

1. Step 1: Write the proportion equation
   129,025.98 : 193,565.89 = 65,020.12 : x
2. Step 2: Convert to fraction form
   129,025.98/193,565.89 = 65,020.12/x
3. Step 3: Cross multiply
   129,025.98x = 193,565.89 × 65,020.12
4. Step 4: Simplify right side
   129,025.98x = 12,585,676,627.33
5. Step 5: Solve for x
   x = 12,585,676,627.33/129,025.98
6. Step 6: Final answer
   x = 97,543.74