Finding the Fourth Proportional to 72.52, 108.29 and 69.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72.52 : 108.29 = 69.88 : x
2. Step 2: Convert to fraction form
   72.52/108.29 = 69.88/x
3. Step 3: Cross multiply
   72.52x = 108.29 × 69.88
4. Step 4: Simplify right side
   72.52x = 7,567.31
5. Step 5: Solve for x
   x = 7,567.31/72.52
6. Step 6: Final answer
   x = 104.35