Finding the Fourth Proportional to 56,632.07, 78,150.60 and 31,138.41

Step by Step Solution

1. Step 1: Write the proportion equation
   56,632.07 : 78,150.60 = 31,138.41 : x
2. Step 2: Convert to fraction form
   56,632.07/78,150.60 = 31,138.41/x
3. Step 3: Cross multiply
   56,632.07x = 78,150.60 × 31,138.41
4. Step 4: Simplify right side
   56,632.07x = 2,433,485,424.55
5. Step 5: Solve for x
   x = 2,433,485,424.55/56,632.07
6. Step 6: Final answer
   x = 42,970.09