Finding the Fourth Proportional to 78,456.97, 108,271.20 and 42,646.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,456.97 : 108,271.20 = 42,646.88 : x
2. Step 2: Convert to fraction form
   78,456.97/108,271.20 = 42,646.88/x
3. Step 3: Cross multiply
   78,456.97x = 108,271.20 × 42,646.88
4. Step 4: Simplify right side
   78,456.97x = 4,617,429,304.46
5. Step 5: Solve for x
   x = 4,617,429,304.46/78,456.97
6. Step 6: Final answer
   x = 58,853.01