Finding the Fourth Proportional to 123.39, 185.18 and 103.32

Step by Step Solution

1. Step 1: Write the proportion equation
   123.39 : 185.18 = 103.32 : x
2. Step 2: Convert to fraction form
   123.39/185.18 = 103.32/x
3. Step 3: Cross multiply
   123.39x = 185.18 × 103.32
4. Step 4: Simplify right side
   123.39x = 19,132.28
5. Step 5: Solve for x
   x = 19,132.28/123.39
6. Step 6: Final answer
   x = 155.06