Finding the Fourth Proportional to 82,209.47, 123,314.27 and 19,879.97

Step by Step Solution

1. Step 1: Write the proportion equation
   82,209.47 : 123,314.27 = 19,879.97 : x
2. Step 2: Convert to fraction form
   82,209.47/123,314.27 = 19,879.97/x
3. Step 3: Cross multiply
   82,209.47x = 123,314.27 × 19,879.97
4. Step 4: Simplify right side
   82,209.47x = 2,451,483,272.20
5. Step 5: Solve for x
   x = 2,451,483,272.20/82,209.47
6. Step 6: Final answer
   x = 29,819.96