Finding the Fourth Proportional to 111.58, 166.23 and 104.59

Step by Step Solution

1. Step 1: Write the proportion equation
   111.58 : 166.23 = 104.59 : x
2. Step 2: Convert to fraction form
   111.58/166.23 = 104.59/x
3. Step 3: Cross multiply
   111.58x = 166.23 × 104.59
4. Step 4: Simplify right side
   111.58x = 17,386.00
5. Step 5: Solve for x
   x = 17,386.00/111.58
6. Step 6: Final answer
   x = 155.82