Finding the Fourth Proportional to 123,849.27, 170,982.84 and 81,530.82

Step by Step Solution

1. Step 1: Write the proportion equation
   123,849.27 : 170,982.84 = 81,530.82 : x
2. Step 2: Convert to fraction form
   123,849.27/170,982.84 = 81,530.82/x
3. Step 3: Cross multiply
   123,849.27x = 170,982.84 × 81,530.82
4. Step 4: Simplify right side
   123,849.27x = 13,940,371,151.13
5. Step 5: Solve for x
   x = 13,940,371,151.13/123,849.27
6. Step 6: Final answer
   x = 112,559.17