Finding the Fourth Proportional to 56,632.48, 78,151.16 and 31,138.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,632.48 : 78,151.16 = 31,138.82 : x
2. Step 2: Convert to fraction form
   56,632.48/78,151.16 = 31,138.82/x
3. Step 3: Cross multiply
   56,632.48x = 78,151.16 × 31,138.82
4. Step 4: Simplify right side
   56,632.48x = 2,433,534,884.19
5. Step 5: Solve for x
   x = 2,433,534,884.19/56,632.48
6. Step 6: Final answer
   x = 42,970.66