Finding the Fourth Proportional to 89.43, 123.30 and 69.49

Step by Step Solution

1. Step 1: Write the proportion equation
   89.43 : 123.30 = 69.49 : x
2. Step 2: Convert to fraction form
   89.43/123.30 = 69.49/x
3. Step 3: Cross multiply
   89.43x = 123.30 × 69.49
4. Step 4: Simplify right side
   89.43x = 8,568.58
5. Step 5: Solve for x
   x = 8,568.58/89.43
6. Step 6: Final answer
   x = 95.82