Finding the Fourth Proportional to 109.69, 151.37 and 72.97

Step by Step Solution

1. Step 1: Write the proportion equation
   109.69 : 151.37 = 72.97 : x
2. Step 2: Convert to fraction form
   109.69/151.37 = 72.97/x
3. Step 3: Cross multiply
   109.69x = 151.37 × 72.97
4. Step 4: Simplify right side
   109.69x = 11,045.10
5. Step 5: Solve for x
   x = 11,045.10/109.69
6. Step 6: Final answer
   x = 100.69