Finding the Fourth Proportional to 123.83, 171.32 and 119.33

Step by Step Solution

1. Step 1: Write the proportion equation
   123.83 : 171.32 = 119.33 : x
2. Step 2: Convert to fraction form
   123.83/171.32 = 119.33/x
3. Step 3: Cross multiply
   123.83x = 171.32 × 119.33
4. Step 4: Simplify right side
   123.83x = 20,443.62
5. Step 5: Solve for x
   x = 20,443.62/123.83
6. Step 6: Final answer
   x = 165.09