Finding the Fourth Proportional to 89.24, 123.11 and 65.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89.24 : 123.11 = 65.98 : x
2. Step 2: Convert to fraction form
   89.24/123.11 = 65.98/x
3. Step 3: Cross multiply
   89.24x = 123.11 × 65.98
4. Step 4: Simplify right side
   89.24x = 8,122.52
5. Step 5: Solve for x
   x = 8,122.52/89.24
6. Step 6: Final answer
   x = 91.02