Finding the Fourth Proportional to 78,441.54, 108,249.24 and 42,631.47

Step by Step Solution

1. Step 1: Write the proportion equation
   78,441.54 : 108,249.24 = 42,631.47 : x
2. Step 2: Convert to fraction form
   78,441.54/108,249.24 = 42,631.47/x
3. Step 3: Cross multiply
   78,441.54x = 108,249.24 × 42,631.47
4. Step 4: Simplify right side
   78,441.54x = 4,614,824,227.58
5. Step 5: Solve for x
   x = 4,614,824,227.58/78,441.54
6. Step 6: Final answer
   x = 58,831.38