Finding the Fourth Proportional to 82,272.15, 123,398.51 and 21,478.41

Step by Step Solution

1. Step 1: Write the proportion equation
   82,272.15 : 123,398.51 = 21,478.41 : x
2. Step 2: Convert to fraction form
   82,272.15/123,398.51 = 21,478.41/x
3. Step 3: Cross multiply
   82,272.15x = 123,398.51 × 21,478.41
4. Step 4: Simplify right side
   82,272.15x = 2,650,403,683.78
5. Step 5: Solve for x
   x = 2,650,403,683.78/82,272.15
6. Step 6: Final answer
   x = 32,215.08