Finding the Fourth Proportional to 223,776.50, 335,391.15 and 105,290.42

Step by Step Solution

1. Step 1: Write the proportion equation
   223,776.50 : 335,391.15 = 105,290.42 : x
2. Step 2: Convert to fraction form
   223,776.50/335,391.15 = 105,290.42/x
3. Step 3: Cross multiply
   223,776.50x = 335,391.15 × 105,290.42
4. Step 4: Simplify right side
   223,776.50x = 35,313,475,047.78
5. Step 5: Solve for x
   x = 35,313,475,047.78/223,776.50
6. Step 6: Final answer
   x = 157,806.90