Finding the Fourth Proportional to 72.37, 108.50 and 33.88

Step by Step Solution

1. Step 1: Write the proportion equation
   72.37 : 108.50 = 33.88 : x
2. Step 2: Convert to fraction form
   72.37/108.50 = 33.88/x
3. Step 3: Cross multiply
   72.37x = 108.50 × 33.88
4. Step 4: Simplify right side
   72.37x = 3,675.81
5. Step 5: Solve for x
   x = 3,675.81/72.37
6. Step 6: Final answer
   x = 50.79