Finding the Fourth Proportional to 109.63, 151.24 and 72.25

Step by Step Solution

1. Step 1: Write the proportion equation
   109.63 : 151.24 = 72.25 : x
2. Step 2: Convert to fraction form
   109.63/151.24 = 72.25/x
3. Step 3: Cross multiply
   109.63x = 151.24 × 72.25
4. Step 4: Simplify right side
   109.63x = 10,926.27
5. Step 5: Solve for x
   x = 10,926.27/109.63
6. Step 6: Final answer
   x = 99.66