Finding the Fourth Proportional to 102,061.60, 140,782.80 and 71,793.52

Step by Step Solution

1. Step 1: Write the proportion equation
   102,061.60 : 140,782.80 = 71,793.52 : x
2. Step 2: Convert to fraction form
   102,061.60/140,782.80 = 71,793.52/x
3. Step 3: Cross multiply
   102,061.60x = 140,782.80 × 71,793.52
4. Step 4: Simplify right side
   102,061.60x = 10,107,292,767.46
5. Step 5: Solve for x
   x = 10,107,292,767.46/102,061.60
6. Step 6: Final answer
   x = 99,031.30