Finding the Fourth Proportional to 103,456.59, 142,765.50 and 60,440.07

Step by Step Solution

1. Step 1: Write the proportion equation
   103,456.59 : 142,765.50 = 60,440.07 : x
2. Step 2: Convert to fraction form
   103,456.59/142,765.50 = 60,440.07/x
3. Step 3: Cross multiply
   103,456.59x = 142,765.50 × 60,440.07
4. Step 4: Simplify right side
   103,456.59x = 8,628,757,575.61
5. Step 5: Solve for x
   x = 8,628,757,575.61/103,456.59
6. Step 6: Final answer
   x = 83,404.62