Finding the Fourth Proportional to 56,644.17, 78,170.04 and 31,151.73

Step by Step Solution

1. Step 1: Write the proportion equation
   56,644.17 : 78,170.04 = 31,151.73 : x
2. Step 2: Convert to fraction form
   56,644.17/78,170.04 = 31,151.73/x
3. Step 3: Cross multiply
   56,644.17x = 78,170.04 × 31,151.73
4. Step 4: Simplify right side
   56,644.17x = 2,435,131,980.17
5. Step 5: Solve for x
   x = 2,435,131,980.17/56,644.17
6. Step 6: Final answer
   x = 42,989.98