Finding the Fourth Proportional to 102,760.94, 141,799.25 and 57,434.15

Step by Step Solution

1. Step 1: Write the proportion equation
   102,760.94 : 141,799.25 = 57,434.15 : x
2. Step 2: Convert to fraction form
   102,760.94/141,799.25 = 57,434.15/x
3. Step 3: Cross multiply
   102,760.94x = 141,799.25 × 57,434.15
4. Step 4: Simplify right side
   102,760.94x = 8,144,118,398.22
5. Step 5: Solve for x
   x = 8,144,118,398.22/102,760.94
6. Step 6: Final answer
   x = 79,253.06