Finding the Fourth Proportional to 56,635.73, 78,159.31 and 31,144.02

Step by Step Solution

1. Step 1: Write the proportion equation
   56,635.73 : 78,159.31 = 31,144.02 : x
2. Step 2: Convert to fraction form
   56,635.73/78,159.31 = 31,144.02/x
3. Step 3: Cross multiply
   56,635.73x = 78,159.31 × 31,144.02
4. Step 4: Simplify right side
   56,635.73x = 2,434,195,153.50
5. Step 5: Solve for x
   x = 2,434,195,153.50/56,635.73
6. Step 6: Final answer
   x = 42,979.85