Finding the Fourth Proportional to 132,568.98, 182,945.52 and 72,139.59

Step by Step Solution

1. Step 1: Write the proportion equation
   132,568.98 : 182,945.52 = 72,139.59 : x
2. Step 2: Convert to fraction form
   132,568.98/182,945.52 = 72,139.59/x
3. Step 3: Cross multiply
   132,568.98x = 182,945.52 × 72,139.59
4. Step 4: Simplify right side
   132,568.98x = 13,197,614,805.14
5. Step 5: Solve for x
   x = 13,197,614,805.14/132,568.98
6. Step 6: Final answer
   x = 99,552.81