Finding the Fourth Proportional to 102,401.96, 141,375.32 and 91,040.07

Step by Step Solution

1. Step 1: Write the proportion equation
   102,401.96 : 141,375.32 = 91,040.07 : x
2. Step 2: Convert to fraction form
   102,401.96/141,375.32 = 91,040.07/x
3. Step 3: Cross multiply
   102,401.96x = 141,375.32 × 91,040.07
4. Step 4: Simplify right side
   102,401.96x = 12,870,818,573.87
5. Step 5: Solve for x
   x = 12,870,818,573.87/102,401.96
6. Step 6: Final answer
   x = 125,689.19