Finding the Fourth Proportional to 59,120.48, 81,560.18 and 39,993.42

Step by Step Solution

1. Step 1: Write the proportion equation
   59,120.48 : 81,560.18 = 39,993.42 : x
2. Step 2: Convert to fraction form
   59,120.48/81,560.18 = 39,993.42/x
3. Step 3: Cross multiply
   59,120.48x = 81,560.18 × 39,993.42
4. Step 4: Simplify right side
   59,120.48x = 3,261,870,534.02
5. Step 5: Solve for x
   x = 3,261,870,534.02/59,120.48
6. Step 6: Final answer
   x = 55,173.28