Finding the Fourth Proportional to 72.91, 109.27 and 32.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72.91 : 109.27 = 32.31 : x
2. Step 2: Convert to fraction form
   72.91/109.27 = 32.31/x
3. Step 3: Cross multiply
   72.91x = 109.27 × 32.31
4. Step 4: Simplify right side
   72.91x = 3,530.51
5. Step 5: Solve for x
   x = 3,530.51/72.91
6. Step 6: Final answer
   x = 48.42