Finding the Fourth Proportional to 123.69, 185.88 and 65.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123.69 : 185.88 = 65.96 : x
2. Step 2: Convert to fraction form
   123.69/185.88 = 65.96/x
3. Step 3: Cross multiply
   123.69x = 185.88 × 65.96
4. Step 4: Simplify right side
   123.69x = 12,260.47
5. Step 5: Solve for x
   x = 12,260.47/123.69
6. Step 6: Final answer
   x = 99.12