Finding the Fourth Proportional to 105,857.80, 158,770.24 and 30,960.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,857.80 : 158,770.24 = 30,960.34 : x
2. Step 2: Convert to fraction form
   105,857.80/158,770.24 = 30,960.34/x
3. Step 3: Cross multiply
   105,857.80x = 158,770.24 × 30,960.34
4. Step 4: Simplify right side
   105,857.80x = 4,915,580,612.28
5. Step 5: Solve for x
   x = 4,915,580,612.28/105,857.80
6. Step 6: Final answer
   x = 46,435.70