Finding the Fourth Proportional to 82,917.88, 124,376.78 and 20,588.38

Step by Step Solution

1. Step 1: Write the proportion equation
   82,917.88 : 124,376.78 = 20,588.38 : x
2. Step 2: Convert to fraction form
   82,917.88/124,376.78 = 20,588.38/x
3. Step 3: Cross multiply
   82,917.88x = 124,376.78 × 20,588.38
4. Step 4: Simplify right side
   82,917.88x = 2,560,716,150.35
5. Step 5: Solve for x
   x = 2,560,716,150.35/82,917.88
6. Step 6: Final answer
   x = 30,882.56