Finding the Fourth Proportional to 65,041.98, 89,772.42 and 39,542.96

Step by Step Solution

1. Step 1: Write the proportion equation
   65,041.98 : 89,772.42 = 39,542.96 : x
2. Step 2: Convert to fraction form
   65,041.98/89,772.42 = 39,542.96/x
3. Step 3: Cross multiply
   65,041.98x = 89,772.42 × 39,542.96
4. Step 4: Simplify right side
   65,041.98x = 3,549,866,912.59
5. Step 5: Solve for x
   x = 3,549,866,912.59/65,041.98
6. Step 6: Final answer
   x = 54,578.09