Finding the Fourth Proportional to 111.45, 167.12 and 34.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111.45 : 167.12 = 34.38 : x
2. Step 2: Convert to fraction form
   111.45/167.12 = 34.38/x
3. Step 3: Cross multiply
   111.45x = 167.12 × 34.38
4. Step 4: Simplify right side
   111.45x = 5,745.59
5. Step 5: Solve for x
   x = 5,745.59/111.45
6. Step 6: Final answer
   x = 51.55