Finding the Fourth Proportional to 56,627.91, 78,147.41 and 31,135.38

Step by Step Solution

1. Step 1: Write the proportion equation
   56,627.91 : 78,147.41 = 31,135.38 : x
2. Step 2: Convert to fraction form
   56,627.91/78,147.41 = 31,135.38/x
3. Step 3: Cross multiply
   56,627.91x = 78,147.41 × 31,135.38
4. Step 4: Simplify right side
   56,627.91x = 2,433,149,150.69
5. Step 5: Solve for x
   x = 2,433,149,150.69/56,627.91
6. Step 6: Final answer
   x = 42,967.31