Finding the Fourth Proportional to 69.69, 104.43 and 42.60

Step by Step Solution

1. Step 1: Write the proportion equation
   69.69 : 104.43 = 42.60 : x
2. Step 2: Convert to fraction form
   69.69/104.43 = 42.60/x
3. Step 3: Cross multiply
   69.69x = 104.43 × 42.60
4. Step 4: Simplify right side
   69.69x = 4,448.72
5. Step 5: Solve for x
   x = 4,448.72/69.69
6. Step 6: Final answer
   x = 63.84