Finding the Fourth Proportional to 82,979.32, 124,469.84 and 20,649.82

Step by Step Solution

1. Step 1: Write the proportion equation
   82,979.32 : 124,469.84 = 20,649.82 : x
2. Step 2: Convert to fraction form
   82,979.32/124,469.84 = 20,649.82/x
3. Step 3: Cross multiply
   82,979.32x = 124,469.84 × 20,649.82
4. Step 4: Simplify right side
   82,979.32x = 2,570,279,791.43
5. Step 5: Solve for x
   x = 2,570,279,791.43/82,979.32
6. Step 6: Final answer
   x = 30,974.94