Finding the Fourth Proportional to 111.69, 167.50 and 103.46

Step by Step Solution

1. Step 1: Write the proportion equation
   111.69 : 167.50 = 103.46 : x
2. Step 2: Convert to fraction form
   111.69/167.50 = 103.46/x
3. Step 3: Cross multiply
   111.69x = 167.50 × 103.46
4. Step 4: Simplify right side
   111.69x = 17,328.45
5. Step 5: Solve for x
   x = 17,328.45/111.69
6. Step 6: Final answer
   x = 155.15