Finding the Fourth Proportional to 132,568.48, 182,944.83 and 72,139.09

Step by Step Solution

1. Step 1: Write the proportion equation
   132,568.48 : 182,944.83 = 72,139.09 : x
2. Step 2: Convert to fraction form
   132,568.48/182,944.83 = 72,139.09/x
3. Step 3: Cross multiply
   132,568.48x = 182,944.83 × 72,139.09
4. Step 4: Simplify right side
   132,568.48x = 13,197,473,556.40
5. Step 5: Solve for x
   x = 13,197,473,556.40/132,568.48
6. Step 6: Final answer
   x = 99,552.12