Finding the Fourth Proportional to 42.33, 63.42 and 28.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42.33 : 63.42 = 28.83 : x
2. Step 2: Convert to fraction form
   42.33/63.42 = 28.83/x
3. Step 3: Cross multiply
   42.33x = 63.42 × 28.83
4. Step 4: Simplify right side
   42.33x = 1,828.40
5. Step 5: Solve for x
   x = 1,828.40/42.33
6. Step 6: Final answer
   x = 43.19