Finding the Fourth Proportional to 145.82, 218.72 and 49.62

Step by Step Solution

1. Step 1: Write the proportion equation
   145.82 : 218.72 = 49.62 : x
2. Step 2: Convert to fraction form
   145.82/218.72 = 49.62/x
3. Step 3: Cross multiply
   145.82x = 218.72 × 49.62
4. Step 4: Simplify right side
   145.82x = 10,852.89
5. Step 5: Solve for x
   x = 10,852.89/145.82
6. Step 6: Final answer
   x = 74.43