Finding the Fourth Proportional to 72.50, 108.85 and 69.24

Step by Step Solution

1. Step 1: Write the proportion equation
   72.50 : 108.85 = 69.24 : x
2. Step 2: Convert to fraction form
   72.50/108.85 = 69.24/x
3. Step 3: Cross multiply
   72.50x = 108.85 × 69.24
4. Step 4: Simplify right side
   72.50x = 7,536.77
5. Step 5: Solve for x
   x = 7,536.77/72.50
6. Step 6: Final answer
   x = 103.96