Finding the Fourth Proportional to 89.57, 124.24 and 85.93

Step by Step Solution

1. Step 1: Write the proportion equation
   89.57 : 124.24 = 85.93 : x
2. Step 2: Convert to fraction form
   89.57/124.24 = 85.93/x
3. Step 3: Cross multiply
   89.57x = 124.24 × 85.93
4. Step 4: Simplify right side
   89.57x = 10,674.89
5. Step 5: Solve for x
   x = 10,674.89/89.57
6. Step 6: Final answer
   x = 119.18