Finding the Fourth Proportional to 89.29, 123.08 and 65.98

Step by Step Solution

1. Step 1: Write the proportion equation
   89.29 : 123.08 = 65.98 : x
2. Step 2: Convert to fraction form
   89.29/123.08 = 65.98/x
3. Step 3: Cross multiply
   89.29x = 123.08 × 65.98
4. Step 4: Simplify right side
   89.29x = 8,120.82
5. Step 5: Solve for x
   x = 8,120.82/89.29
6. Step 6: Final answer
   x = 90.95