Finding the Fourth Proportional to 89.98, 134.91 and 49.42

Step by Step Solution

1. Step 1: Write the proportion equation
   89.98 : 134.91 = 49.42 : x
2. Step 2: Convert to fraction form
   89.98/134.91 = 49.42/x
3. Step 3: Cross multiply
   89.98x = 134.91 × 49.42
4. Step 4: Simplify right side
   89.98x = 6,667.25
5. Step 5: Solve for x
   x = 6,667.25/89.98
6. Step 6: Final answer
   x = 74.10