Finding the Fourth Proportional to 82,961.60, 124,442.82 and 20,632.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,961.60 : 124,442.82 = 20,632.10 : x
2. Step 2: Convert to fraction form
   82,961.60/124,442.82 = 20,632.10/x
3. Step 3: Cross multiply
   82,961.60x = 124,442.82 × 20,632.10
4. Step 4: Simplify right side
   82,961.60x = 2,567,516,084.31
5. Step 5: Solve for x
   x = 2,567,516,084.31/82,961.60
6. Step 6: Final answer
   x = 30,948.25