Finding the Fourth Proportional to 123.16, 169.82 and 103.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123.16 : 169.82 = 103.52 : x
2. Step 2: Convert to fraction form
   123.16/169.82 = 103.52/x
3. Step 3: Cross multiply
   123.16x = 169.82 × 103.52
4. Step 4: Simplify right side
   123.16x = 17,579.77
5. Step 5: Solve for x
   x = 17,579.77/123.16
6. Step 6: Final answer
   x = 142.74