Finding the Fourth Proportional to 111.55, 167.28 and 34.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111.55 : 167.28 = 34.50 : x
2. Step 2: Convert to fraction form
   111.55/167.28 = 34.50/x
3. Step 3: Cross multiply
   111.55x = 167.28 × 34.50
4. Step 4: Simplify right side
   111.55x = 5,771.16
5. Step 5: Solve for x
   x = 5,771.16/111.55
6. Step 6: Final answer
   x = 51.74