Finding the Fourth Proportional to 42.30, 63.32 and 27.98

Step by Step Solution

1. Step 1: Write the proportion equation
   42.30 : 63.32 = 27.98 : x
2. Step 2: Convert to fraction form
   42.30/63.32 = 27.98/x
3. Step 3: Cross multiply
   42.30x = 63.32 × 27.98
4. Step 4: Simplify right side
   42.30x = 1,771.69
5. Step 5: Solve for x
   x = 1,771.69/42.30
6. Step 6: Final answer
   x = 41.88