Finding the Fourth Proportional to 123.96, 185.86 and 69.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123.96 : 185.86 = 69.96 : x
2. Step 2: Convert to fraction form
   123.96/185.86 = 69.96/x
3. Step 3: Cross multiply
   123.96x = 185.86 × 69.96
4. Step 4: Simplify right side
   123.96x = 13,002.77
5. Step 5: Solve for x
   x = 13,002.77/123.96
6. Step 6: Final answer
   x = 104.89