Finding the Fourth Proportional to 89,456.24, 123,449.92 and 49,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,456.24 : 123,449.92 = 49,173.50 : x
2. Step 2: Convert to fraction form
   89,456.24/123,449.92 = 49,173.50/x
3. Step 3: Cross multiply
   89,456.24x = 123,449.92 × 49,173.50
4. Step 4: Simplify right side
   89,456.24x = 6,070,463,900.94
5. Step 5: Solve for x
   x = 6,070,463,900.94/89,456.24
6. Step 6: Final answer
   x = 67,859.60