Finding the Fourth Proportional to 78,162.43, 107,864.53 and 42,352.43

Step by Step Solution

1. Step 1: Write the proportion equation
   78,162.43 : 107,864.53 = 42,352.43 : x
2. Step 2: Convert to fraction form
   78,162.43/107,864.53 = 42,352.43/x
3. Step 3: Cross multiply
   78,162.43x = 107,864.53 × 42,352.43
4. Step 4: Simplify right side
   78,162.43x = 4,568,324,956.31
5. Step 5: Solve for x
   x = 4,568,324,956.31/78,162.43
6. Step 6: Final answer
   x = 58,446.56