Finding the Fourth Proportional to 70,380.80, 105,589.56 and 30,945.68

Step by Step Solution

1. Step 1: Write the proportion equation
   70,380.80 : 105,589.56 = 30,945.68 : x
2. Step 2: Convert to fraction form
   70,380.80/105,589.56 = 30,945.68/x
3. Step 3: Cross multiply
   70,380.80x = 105,589.56 × 30,945.68
4. Step 4: Simplify right side
   70,380.80x = 3,267,540,735.10
5. Step 5: Solve for x
   x = 3,267,540,735.10/70,380.80
6. Step 6: Final answer
   x = 46,426.59