Finding the Fourth Proportional to 72,347.63, 108,687.78 and 51,049.37

Step by Step Solution

1. Step 1: Write the proportion equation
   72,347.63 : 108,687.78 = 51,049.37 : x
2. Step 2: Convert to fraction form
   72,347.63/108,687.78 = 51,049.37/x
3. Step 3: Cross multiply
   72,347.63x = 108,687.78 × 51,049.37
4. Step 4: Simplify right side
   72,347.63x = 5,548,442,695.70
5. Step 5: Solve for x
   x = 5,548,442,695.70/72,347.63
6. Step 6: Final answer
   x = 76,691.42