Finding the Fourth Proportional to 72,374.52, 108,728.10 and 51,366.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,374.52 : 108,728.10 = 51,366.72 : x
2. Step 2: Convert to fraction form
   72,374.52/108,728.10 = 51,366.72/x
3. Step 3: Cross multiply
   72,374.52x = 108,728.10 × 51,366.72
4. Step 4: Simplify right side
   72,374.52x = 5,585,005,868.83
5. Step 5: Solve for x
   x = 5,585,005,868.83/72,374.52
6. Step 6: Final answer
   x = 77,168.12