Finding the Fourth Proportional to 109.68, 151.37 and 72.82

Step by Step Solution

1. Step 1: Write the proportion equation
   109.68 : 151.37 = 72.82 : x
2. Step 2: Convert to fraction form
   109.68/151.37 = 72.82/x
3. Step 3: Cross multiply
   109.68x = 151.37 × 72.82
4. Step 4: Simplify right side
   109.68x = 11,022.76
5. Step 5: Solve for x
   x = 11,022.76/109.68
6. Step 6: Final answer
   x = 100.50