Finding the Fourth Proportional to 75,312.72, 103,932.72 and 53,807.76

Step by Step Solution

1. Step 1: Write the proportion equation
   75,312.72 : 103,932.72 = 53,807.76 : x
2. Step 2: Convert to fraction form
   75,312.72/103,932.72 = 53,807.76/x
3. Step 3: Cross multiply
   75,312.72x = 103,932.72 × 53,807.76
4. Step 4: Simplify right side
   75,312.72x = 5,592,386,853.91
5. Step 5: Solve for x
   x = 5,592,386,853.91/75,312.72
6. Step 6: Final answer
   x = 74,255.54