Finding the Fourth Proportional to 123.18, 185.06 and 111.94

Step by Step Solution

1. Step 1: Write the proportion equation
   123.18 : 185.06 = 111.94 : x
2. Step 2: Convert to fraction form
   123.18/185.06 = 111.94/x
3. Step 3: Cross multiply
   123.18x = 185.06 × 111.94
4. Step 4: Simplify right side
   123.18x = 20,715.62
5. Step 5: Solve for x
   x = 20,715.62/123.18
6. Step 6: Final answer
   x = 168.17