Finding the Fourth Proportional to 100.49, 150.75 and 42.69

Step by Step Solution

1. Step 1: Write the proportion equation
   100.49 : 150.75 = 42.69 : x
2. Step 2: Convert to fraction form
   100.49/150.75 = 42.69/x
3. Step 3: Cross multiply
   100.49x = 150.75 × 42.69
4. Step 4: Simplify right side
   100.49x = 6,435.52
5. Step 5: Solve for x
   x = 6,435.52/100.49
6. Step 6: Final answer
   x = 64.04