Finding the Fourth Proportional to 78,570.98, 108,425.88 and 42,760.23

Step by Step Solution

1. Step 1: Write the proportion equation
   78,570.98 : 108,425.88 = 42,760.23 : x
2. Step 2: Convert to fraction form
   78,570.98/108,425.88 = 42,760.23/x
3. Step 3: Cross multiply
   78,570.98x = 108,425.88 × 42,760.23
4. Step 4: Simplify right side
   78,570.98x = 4,636,315,566.75
5. Step 5: Solve for x
   x = 4,636,315,566.75/78,570.98
6. Step 6: Final answer
   x = 59,007.99