Finding the Fourth Proportional to 100.32, 150.50 and 42.54

Step by Step Solution

1. Step 1: Write the proportion equation
   100.32 : 150.50 = 42.54 : x
2. Step 2: Convert to fraction form
   100.32/150.50 = 42.54/x
3. Step 3: Cross multiply
   100.32x = 150.50 × 42.54
4. Step 4: Simplify right side
   100.32x = 6,402.06
5. Step 5: Solve for x
   x = 6,402.06/100.32
6. Step 6: Final answer
   x = 63.82