Finding the Fourth Proportional to 82,470.95, 123,645.87 and 26,278.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,470.95 : 123,645.87 = 26,278.72 : x
2. Step 2: Convert to fraction form
   82,470.95/123,645.87 = 26,278.72/x
3. Step 3: Cross multiply
   82,470.95x = 123,645.87 × 26,278.72
4. Step 4: Simplify right side
   82,470.95x = 3,249,255,196.89
5. Step 5: Solve for x
   x = 3,249,255,196.89/82,470.95
6. Step 6: Final answer
   x = 39,398.78