Finding the Fourth Proportional to 116.89, 174.22 and 111.81

Step by Step Solution

1. Step 1: Write the proportion equation
   116.89 : 174.22 = 111.81 : x
2. Step 2: Convert to fraction form
   116.89/174.22 = 111.81/x
3. Step 3: Cross multiply
   116.89x = 174.22 × 111.81
4. Step 4: Simplify right side
   116.89x = 19,479.54
5. Step 5: Solve for x
   x = 19,479.54/116.89
6. Step 6: Final answer
   x = 166.65