Finding the Fourth Proportional to 56,635.46, 78,156.98 and 31,142.24

Step by Step Solution

1. Step 1: Write the proportion equation
   56,635.46 : 78,156.98 = 31,142.24 : x
2. Step 2: Convert to fraction form
   56,635.46/78,156.98 = 31,142.24/x
3. Step 3: Cross multiply
   56,635.46x = 78,156.98 × 31,142.24
4. Step 4: Simplify right side
   56,635.46x = 2,433,983,428.84
5. Step 5: Solve for x
   x = 2,433,983,428.84/56,635.46
6. Step 6: Final answer
   x = 42,976.32