Finding the Fourth Proportional to 72.86, 109.36 and 32.31

Step by Step Solution

1. Step 1: Write the proportion equation
   72.86 : 109.36 = 32.31 : x
2. Step 2: Convert to fraction form
   72.86/109.36 = 32.31/x
3. Step 3: Cross multiply
   72.86x = 109.36 × 32.31
4. Step 4: Simplify right side
   72.86x = 3,533.42
5. Step 5: Solve for x
   x = 3,533.42/72.86
6. Step 6: Final answer
   x = 48.50