Finding the Fourth Proportional to 69.62, 104.42 and 28.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69.62 : 104.42 = 28.50 : x
2. Step 2: Convert to fraction form
   69.62/104.42 = 28.50/x
3. Step 3: Cross multiply
   69.62x = 104.42 × 28.50
4. Step 4: Simplify right side
   69.62x = 2,975.83
5. Step 5: Solve for x
   x = 2,975.83/69.62
6. Step 6: Final answer
   x = 42.75