Finding the Fourth Proportional to 78,748.14, 108,711.18 and 54,567.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,748.14 : 108,711.18 = 54,567.42 : x
2. Step 2: Convert to fraction form
   78,748.14/108,711.18 = 54,567.42/x
3. Step 3: Cross multiply
   78,748.14x = 108,711.18 × 54,567.42
4. Step 4: Simplify right side
   78,748.14x = 5,932,088,617.76
5. Step 5: Solve for x
   x = 5,932,088,617.76/78,748.14
6. Step 6: Final answer
   x = 75,329.89