Finding the Fourth Proportional to 102,187.31, 141,057.72 and 76,767.41

Step by Step Solution

1. Step 1: Write the proportion equation
   102,187.31 : 141,057.72 = 76,767.41 : x
2. Step 2: Convert to fraction form
   102,187.31/141,057.72 = 76,767.41/x
3. Step 3: Cross multiply
   102,187.31x = 141,057.72 × 76,767.41
4. Step 4: Simplify right side
   102,187.31x = 10,828,635,824.91
5. Step 5: Solve for x
   x = 10,828,635,824.91/102,187.31
6. Step 6: Final answer
   x = 105,968.50