Finding the Fourth Proportional to 82,278.78, 123,398.91 and 23,120.10

Step by Step Solution

1. Step 1: Write the proportion equation
   82,278.78 : 123,398.91 = 23,120.10 : x
2. Step 2: Convert to fraction form
   82,278.78/123,398.91 = 23,120.10/x
3. Step 3: Cross multiply
   82,278.78x = 123,398.91 × 23,120.10
4. Step 4: Simplify right side
   82,278.78x = 2,852,995,139.09
5. Step 5: Solve for x
   x = 2,852,995,139.09/82,278.78
6. Step 6: Final answer
   x = 34,674.74