Finding the Fourth Proportional to 78,395.88, 108,144.88 and 49,664.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,395.88 : 108,144.88 = 49,664.88 : x
2. Step 2: Convert to fraction form
   78,395.88/108,144.88 = 49,664.88/x
3. Step 3: Cross multiply
   78,395.88x = 108,144.88 × 49,664.88
4. Step 4: Simplify right side
   78,395.88x = 5,371,002,487.81
5. Step 5: Solve for x
   x = 5,371,002,487.81/78,395.88
6. Step 6: Final answer
   x = 68,511.29