Finding the Fourth Proportional to 89,776.69, 123,889.77 and 49,489.59

Step by Step Solution

1. Step 1: Write the proportion equation
   89,776.69 : 123,889.77 = 49,489.59 : x
2. Step 2: Convert to fraction form
   89,776.69/123,889.77 = 49,489.59/x
3. Step 3: Cross multiply
   89,776.69x = 123,889.77 × 49,489.59
4. Step 4: Simplify right side
   89,776.69x = 6,131,253,922.49
5. Step 5: Solve for x
   x = 6,131,253,922.49/89,776.69
6. Step 6: Final answer
   x = 68,294.50