Finding the Fourth Proportional to 72.99, 109.55 and 32.43

Step by Step Solution

1. Step 1: Write the proportion equation
   72.99 : 109.55 = 32.43 : x
2. Step 2: Convert to fraction form
   72.99/109.55 = 32.43/x
3. Step 3: Cross multiply
   72.99x = 109.55 × 32.43
4. Step 4: Simplify right side
   72.99x = 3,552.54
5. Step 5: Solve for x
   x = 3,552.54/72.99
6. Step 6: Final answer
   x = 48.67