Finding the Fourth Proportional to 56,634.54, 78,155.96 and 31,142.55

Step by Step Solution

1. Step 1: Write the proportion equation
   56,634.54 : 78,155.96 = 31,142.55 : x
2. Step 2: Convert to fraction form
   56,634.54/78,155.96 = 31,142.55/x
3. Step 3: Cross multiply
   56,634.54x = 78,155.96 × 31,142.55
4. Step 4: Simplify right side
   56,634.54x = 2,433,975,809.66
5. Step 5: Solve for x
   x = 2,433,975,809.66/56,634.54
6. Step 6: Final answer
   x = 42,976.88