Finding the Fourth Proportional to 123,173.56, 170,025.73 and 80,734.83

Step by Step Solution

1. Step 1: Write the proportion equation
   123,173.56 : 170,025.73 = 80,734.83 : x
2. Step 2: Convert to fraction form
   123,173.56/170,025.73 = 80,734.83/x
3. Step 3: Cross multiply
   123,173.56x = 170,025.73 × 80,734.83
4. Step 4: Simplify right side
   123,173.56x = 13,726,998,021.88
5. Step 5: Solve for x
   x = 13,726,998,021.88/123,173.56
6. Step 6: Final answer
   x = 111,444.35