Finding the Fourth Proportional to 105,911.39, 158,790.15 and 49,722.59

Step by Step Solution

1. Step 1: Write the proportion equation
   105,911.39 : 158,790.15 = 49,722.59 : x
2. Step 2: Convert to fraction form
   105,911.39/158,790.15 = 49,722.59/x
3. Step 3: Cross multiply
   105,911.39x = 158,790.15 × 49,722.59
4. Step 4: Simplify right side
   105,911.39x = 7,895,456,730.54
5. Step 5: Solve for x
   x = 7,895,456,730.54/105,911.39
6. Step 6: Final answer
   x = 74,547.76