Finding the Fourth Proportional to 89,286.56, 123,210.64 and 49,540

Step by Step Solution

1. Step 1: Write the proportion equation
   89,286.56 : 123,210.64 = 49,540 : x
2. Step 2: Convert to fraction form
   89,286.56/123,210.64 = 49,540/x
3. Step 3: Cross multiply
   89,286.56x = 123,210.64 × 49,540
4. Step 4: Simplify right side
   89,286.56x = 6,103,855,105.60
5. Step 5: Solve for x
   x = 6,103,855,105.60/89,286.56
6. Step 6: Final answer
   x = 68,362.53