Finding the Fourth Proportional to 105,519.68, 158,287.71 and 30,641.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,519.68 : 158,287.71 = 30,641.05 : x
2. Step 2: Convert to fraction form
   105,519.68/158,287.71 = 30,641.05/x
3. Step 3: Cross multiply
   105,519.68x = 158,287.71 × 30,641.05
4. Step 4: Simplify right side
   105,519.68x = 4,850,101,636.50
5. Step 5: Solve for x
   x = 4,850,101,636.50/105,519.68
6. Step 6: Final answer
   x = 45,963.95