Finding the Fourth Proportional to 123.69, 185.54 and 69.47

Step by Step Solution

1. Step 1: Write the proportion equation
   123.69 : 185.54 = 69.47 : x
2. Step 2: Convert to fraction form
   123.69/185.54 = 69.47/x
3. Step 3: Cross multiply
   123.69x = 185.54 × 69.47
4. Step 4: Simplify right side
   123.69x = 12,888.88
5. Step 5: Solve for x
   x = 12,888.88/123.69
6. Step 6: Final answer
   x = 104.20