Finding the Fourth Proportional to 105,910.89, 158,789.40 and 49,722.09

Step by Step Solution

1. Step 1: Write the proportion equation
   105,910.89 : 158,789.40 = 49,722.09 : x
2. Step 2: Convert to fraction form
   105,910.89/158,789.40 = 49,722.09/x
3. Step 3: Cross multiply
   105,910.89x = 158,789.40 × 49,722.09
4. Step 4: Simplify right side
   105,910.89x = 7,895,340,837.85
5. Step 5: Solve for x
   x = 7,895,340,837.85/105,910.89
6. Step 6: Final answer
   x = 74,547.02