Finding the Fourth Proportional to 116.34, 173.78 and 111.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116.34 : 173.78 = 111.12 : x
2. Step 2: Convert to fraction form
   116.34/173.78 = 111.12/x
3. Step 3: Cross multiply
   116.34x = 173.78 × 111.12
4. Step 4: Simplify right side
   116.34x = 19,309.88
5. Step 5: Solve for x
   x = 19,309.88/116.34
6. Step 6: Final answer
   x = 165.98