Finding the Fourth Proportional to 123.18, 185.13 and 82.83

Step by Step Solution

1. Step 1: Write the proportion equation
   123.18 : 185.13 = 82.83 : x
2. Step 2: Convert to fraction form
   123.18/185.13 = 82.83/x
3. Step 3: Cross multiply
   123.18x = 185.13 × 82.83
4. Step 4: Simplify right side
   123.18x = 15,334.32
5. Step 5: Solve for x
   x = 15,334.32/123.18
6. Step 6: Final answer
   x = 124.49