Finding the Fourth Proportional to 82,638.86, 123,966.49 and 26,464.86

Step by Step Solution

1. Step 1: Write the proportion equation
   82,638.86 : 123,966.49 = 26,464.86 : x
2. Step 2: Convert to fraction form
   82,638.86/123,966.49 = 26,464.86/x
3. Step 3: Cross multiply
   82,638.86x = 123,966.49 × 26,464.86
4. Step 4: Simplify right side
   82,638.86x = 3,280,755,802.54
5. Step 5: Solve for x
   x = 3,280,755,802.54/82,638.86
6. Step 6: Final answer
   x = 39,699.92