Finding the Fourth Proportional to 141,411.31, 195,142.60 and 77,748.61

Step by Step Solution

1. Step 1: Write the proportion equation
   141,411.31 : 195,142.60 = 77,748.61 : x
2. Step 2: Convert to fraction form
   141,411.31/195,142.60 = 77,748.61/x
3. Step 3: Cross multiply
   141,411.31x = 195,142.60 × 77,748.61
4. Step 4: Simplify right side
   141,411.31x = 15,172,065,901.79
5. Step 5: Solve for x
   x = 15,172,065,901.79/141,411.31
6. Step 6: Final answer
   x = 107,290.33