Finding the Fourth Proportional to 100.76, 151.17 and 28.62

Step by Step Solution

1. Step 1: Write the proportion equation
   100.76 : 151.17 = 28.62 : x
2. Step 2: Convert to fraction form
   100.76/151.17 = 28.62/x
3. Step 3: Cross multiply
   100.76x = 151.17 × 28.62
4. Step 4: Simplify right side
   100.76x = 4,326.69
5. Step 5: Solve for x
   x = 4,326.69/100.76
6. Step 6: Final answer
   x = 42.94