Finding the Fourth Proportional to 100.63, 150.94 and 28.49

Step by Step Solution

1. Step 1: Write the proportion equation
   100.63 : 150.94 = 28.49 : x
2. Step 2: Convert to fraction form
   100.63/150.94 = 28.49/x
3. Step 3: Cross multiply
   100.63x = 150.94 × 28.49
4. Step 4: Simplify right side
   100.63x = 4,300.28
5. Step 5: Solve for x
   x = 4,300.28/100.63
6. Step 6: Final answer
   x = 42.73