Finding the Fourth Proportional to 72.25, 108.32 and 46.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72.25 : 108.32 = 46.55 : x
2. Step 2: Convert to fraction form
   72.25/108.32 = 46.55/x
3. Step 3: Cross multiply
   72.25x = 108.32 × 46.55
4. Step 4: Simplify right side
   72.25x = 5,042.33
5. Step 5: Solve for x
   x = 5,042.33/72.25
6. Step 6: Final answer
   x = 69.79