Finding the Fourth Proportional to 82,721.76, 123,147.08 and 82,229.68

Step by Step Solution

1. Step 1: Write the proportion equation
   82,721.76 : 123,147.08 = 82,229.68 : x
2. Step 2: Convert to fraction form
   82,721.76/123,147.08 = 82,229.68/x
3. Step 3: Cross multiply
   82,721.76x = 123,147.08 × 82,229.68
4. Step 4: Simplify right side
   82,721.76x = 10,126,345,495.02
5. Step 5: Solve for x
   x = 10,126,345,495.02/82,721.76
6. Step 6: Final answer
   x = 122,414.54