Finding the Fourth Proportional to 123,279.97, 170,067.95 and 80,243.76

Step by Step Solution

1. Step 1: Write the proportion equation
   123,279.97 : 170,067.95 = 80,243.76 : x
2. Step 2: Convert to fraction form
   123,279.97/170,067.95 = 80,243.76/x
3. Step 3: Cross multiply
   123,279.97x = 170,067.95 × 80,243.76
4. Step 4: Simplify right side
   123,279.97x = 13,646,892,752.31
5. Step 5: Solve for x
   x = 13,646,892,752.31/123,279.97
6. Step 6: Final answer
   x = 110,698.38