Finding the Fourth Proportional to 89,786.45, 123,906.17 and 49,501.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89,786.45 : 123,906.17 = 49,501.78 : x
2. Step 2: Convert to fraction form
   89,786.45/123,906.17 = 49,501.78/x
3. Step 3: Cross multiply
   89,786.45x = 123,906.17 × 49,501.78
4. Step 4: Simplify right side
   89,786.45x = 6,133,575,100.94
5. Step 5: Solve for x
   x = 6,133,575,100.94/89,786.45
6. Step 6: Final answer
   x = 68,312.93