Finding the Fourth Proportional to 71,545.98, 98,743.72 and 42,866.78

Step by Step Solution

1. Step 1: Write the proportion equation
   71,545.98 : 98,743.72 = 42,866.78 : x
2. Step 2: Convert to fraction form
   71,545.98/98,743.72 = 42,866.78/x
3. Step 3: Cross multiply
   71,545.98x = 98,743.72 × 42,866.78
4. Step 4: Simplify right side
   71,545.98x = 4,232,824,827.90
5. Step 5: Solve for x
   x = 4,232,824,827.90/71,545.98
6. Step 6: Final answer
   x = 59,162.30