Finding the Fourth Proportional to 45.34, 67.98 and 42.14

Step by Step Solution

1. Step 1: Write the proportion equation
   45.34 : 67.98 = 42.14 : x
2. Step 2: Convert to fraction form
   45.34/67.98 = 42.14/x
3. Step 3: Cross multiply
   45.34x = 67.98 × 42.14
4. Step 4: Simplify right side
   45.34x = 2,864.68
5. Step 5: Solve for x
   x = 2,864.68/45.34
6. Step 6: Final answer
   x = 63.18