Finding the Fourth Proportional to 78,630.78, 108,512.43 and 42,822.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,630.78 : 108,512.43 = 42,822.74 : x
2. Step 2: Convert to fraction form
   78,630.78/108,512.43 = 42,822.74/x
3. Step 3: Cross multiply
   78,630.78x = 108,512.43 × 42,822.74
4. Step 4: Simplify right side
   78,630.78x = 4,646,799,687.35
5. Step 5: Solve for x
   x = 4,646,799,687.35/78,630.78
6. Step 6: Final answer
   x = 59,096.44