Finding the Fourth Proportional to 82,976.91, 124,465.82 and 20,647.41

Step by Step Solution

1. Step 1: Write the proportion equation
   82,976.91 : 124,465.82 = 20,647.41 : x
2. Step 2: Convert to fraction form
   82,976.91/124,465.82 = 20,647.41/x
3. Step 3: Cross multiply
   82,976.91x = 124,465.82 × 20,647.41
4. Step 4: Simplify right side
   82,976.91x = 2,569,896,246.54
5. Step 5: Solve for x
   x = 2,569,896,246.54/82,976.91
6. Step 6: Final answer
   x = 30,971.22