Finding the Fourth Proportional to 82,977.91, 124,467.32 and 20,648.41

Step by Step Solution

1. Step 1: Write the proportion equation
   82,977.91 : 124,467.32 = 20,648.41 : x
2. Step 2: Convert to fraction form
   82,977.91/124,467.32 = 20,648.41/x
3. Step 3: Cross multiply
   82,977.91x = 124,467.32 × 20,648.41
4. Step 4: Simplify right side
   82,977.91x = 2,570,052,151.72
5. Step 5: Solve for x
   x = 2,570,052,151.72/82,977.91
6. Step 6: Final answer
   x = 30,972.73