Finding the Fourth Proportional to 78,660.18, 108,550.17 and 42,850.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,660.18 : 108,550.17 = 42,850.17 : x
2. Step 2: Convert to fraction form
   78,660.18/108,550.17 = 42,850.17/x
3. Step 3: Cross multiply
   78,660.18x = 108,550.17 × 42,850.17
4. Step 4: Simplify right side
   78,660.18x = 4,651,393,238.03
5. Step 5: Solve for x
   x = 4,651,393,238.03/78,660.18
6. Step 6: Final answer
   x = 59,132.76