Finding the Fourth Proportional to 89.24, 123.37 and 85.41

Step by Step Solution

1. Step 1: Write the proportion equation
   89.24 : 123.37 = 85.41 : x
2. Step 2: Convert to fraction form
   89.24/123.37 = 85.41/x
3. Step 3: Cross multiply
   89.24x = 123.37 × 85.41
4. Step 4: Simplify right side
   89.24x = 10,537.03
5. Step 5: Solve for x
   x = 10,537.03/89.24
6. Step 6: Final answer
   x = 118.08