Finding the Fourth Proportional to 78,507.71, 108,298.58 and 54,592.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,507.71 : 108,298.58 = 54,592.86 : x
2. Step 2: Convert to fraction form
   78,507.71/108,298.58 = 54,592.86/x
3. Step 3: Cross multiply
   78,507.71x = 108,298.58 × 54,592.86
4. Step 4: Simplify right side
   78,507.71x = 5,912,328,943.17
5. Step 5: Solve for x
   x = 5,912,328,943.17/78,507.71
6. Step 6: Final answer
   x = 75,308.90