Finding the Fourth Proportional to 111.28, 167.86 and 104.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111.28 : 167.86 = 104.62 : x
2. Step 2: Convert to fraction form
   111.28/167.86 = 104.62/x
3. Step 3: Cross multiply
   111.28x = 167.86 × 104.62
4. Step 4: Simplify right side
   111.28x = 17,561.51
5. Step 5: Solve for x
   x = 17,561.51/111.28
6. Step 6: Final answer
   x = 157.81