Finding the Fourth Proportional to 78,440.94, 108,249.33 and 42,630.95

Step by Step Solution

1. Step 1: Write the proportion equation
   78,440.94 : 108,249.33 = 42,630.95 : x
2. Step 2: Convert to fraction form
   78,440.94/108,249.33 = 42,630.95/x
3. Step 3: Cross multiply
   78,440.94x = 108,249.33 × 42,630.95
4. Step 4: Simplify right side
   78,440.94x = 4,614,772,205.25
5. Step 5: Solve for x
   x = 4,614,772,205.25/78,440.94
6. Step 6: Final answer
   x = 58,831.17