Finding the Fourth Proportional to 105,309.40, 157,923.58 and 82,864.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,309.40 : 157,923.58 = 82,864.24 : x
2. Step 2: Convert to fraction form
   105,309.40/157,923.58 = 82,864.24/x
3. Step 3: Cross multiply
   105,309.40x = 157,923.58 × 82,864.24
4. Step 4: Simplify right side
   105,309.40x = 13,086,217,434.78
5. Step 5: Solve for x
   x = 13,086,217,434.78/105,309.40
6. Step 6: Final answer
   x = 124,264.48