Finding the Fourth Proportional to 116.10, 173.88 and 111.42

Step by Step Solution

1. Step 1: Write the proportion equation
   116.10 : 173.88 = 111.42 : x
2. Step 2: Convert to fraction form
   116.10/173.88 = 111.42/x
3. Step 3: Cross multiply
   116.10x = 173.88 × 111.42
4. Step 4: Simplify right side
   116.10x = 19,373.71
5. Step 5: Solve for x
   x = 19,373.71/116.10
6. Step 6: Final answer
   x = 166.87