Finding the Fourth Proportional to 82,938.32, 124,407.56 and 20,608.82

Step by Step Solution

1. Step 1: Write the proportion equation
   82,938.32 : 124,407.56 = 20,608.82 : x
2. Step 2: Convert to fraction form
   82,938.32/124,407.56 = 20,608.82/x
3. Step 3: Cross multiply
   82,938.32x = 124,407.56 × 20,608.82
4. Step 4: Simplify right side
   82,938.32x = 2,563,893,010.68
5. Step 5: Solve for x
   x = 2,563,893,010.68/82,938.32
6. Step 6: Final answer
   x = 30,913.25