Finding the Fourth Proportional to 78,762.78, 108,693.18 and 42,952.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,762.78 : 108,693.18 = 42,952.50 : x
2. Step 2: Convert to fraction form
   78,762.78/108,693.18 = 42,952.50/x
3. Step 3: Cross multiply
   78,762.78x = 108,693.18 × 42,952.50
4. Step 4: Simplify right side
   78,762.78x = 4,668,643,813.95
5. Step 5: Solve for x
   x = 4,668,643,813.95/78,762.78
6. Step 6: Final answer
   x = 59,274.75