Finding the Fourth Proportional to 111.75, 167.59 and 104.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111.75 : 167.59 = 104.59 : x
2. Step 2: Convert to fraction form
   111.75/167.59 = 104.59/x
3. Step 3: Cross multiply
   111.75x = 167.59 × 104.59
4. Step 4: Simplify right side
   111.75x = 17,528.24
5. Step 5: Solve for x
   x = 17,528.24/111.75
6. Step 6: Final answer
   x = 156.85