Finding the Fourth Proportional to 89.46, 123.26 and 71.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89.46 : 123.26 = 71.10 : x
2. Step 2: Convert to fraction form
   89.46/123.26 = 71.10/x
3. Step 3: Cross multiply
   89.46x = 123.26 × 71.10
4. Step 4: Simplify right side
   89.46x = 8,763.43
5. Step 5: Solve for x
   x = 8,763.43/89.46
6. Step 6: Final answer
   x = 97.96