Finding the Fourth Proportional to 100.49, 150.73 and 28.34

Step by Step Solution

1. Step 1: Write the proportion equation
   100.49 : 150.73 = 28.34 : x
2. Step 2: Convert to fraction form
   100.49/150.73 = 28.34/x
3. Step 3: Cross multiply
   100.49x = 150.73 × 28.34
4. Step 4: Simplify right side
   100.49x = 4,271.43
5. Step 5: Solve for x
   x = 4,271.43/100.49
6. Step 6: Final answer
   x = 42.51