Finding the Fourth Proportional to 105,661.78, 158,544.68 and 49,492.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105,661.78 : 158,544.68 = 49,492.17 : x
2. Step 2: Convert to fraction form
   105,661.78/158,544.68 = 49,492.17/x
3. Step 3: Cross multiply
   105,661.78x = 158,544.68 × 49,492.17
4. Step 4: Simplify right side
   105,661.78x = 7,846,720,007.69
5. Step 5: Solve for x
   x = 7,846,720,007.69/105,661.78
6. Step 6: Final answer
   x = 74,262.62