Finding the Fourth Proportional to 49.30, 73.82 and 42.10

Step by Step Solution

1. Step 1: Write the proportion equation
   49.30 : 73.82 = 42.10 : x
2. Step 2: Convert to fraction form
   49.30/73.82 = 42.10/x
3. Step 3: Cross multiply
   49.30x = 73.82 × 42.10
4. Step 4: Simplify right side
   49.30x = 3,107.82
5. Step 5: Solve for x
   x = 3,107.82/49.30
6. Step 6: Final answer
   x = 63.04