Finding the Fourth Proportional to 72.64, 109.01 and 32.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72.64 : 109.01 = 32.05 : x
2. Step 2: Convert to fraction form
   72.64/109.01 = 32.05/x
3. Step 3: Cross multiply
   72.64x = 109.01 × 32.05
4. Step 4: Simplify right side
   72.64x = 3,493.77
5. Step 5: Solve for x
   x = 3,493.77/72.64
6. Step 6: Final answer
   x = 48.10