Finding the Fourth Proportional to 123,633.05, 170,565.31 and 80,663.09

Step by Step Solution

1. Step 1: Write the proportion equation
   123,633.05 : 170,565.31 = 80,663.09 : x
2. Step 2: Convert to fraction form
   123,633.05/170,565.31 = 80,663.09/x
3. Step 3: Cross multiply
   123,633.05x = 170,565.31 × 80,663.09
4. Step 4: Simplify right side
   123,633.05x = 13,758,324,951.41
5. Step 5: Solve for x
   x = 13,758,324,951.41/123,633.05
6. Step 6: Final answer
   x = 111,283.55