Finding the Fourth Proportional to 78,162.60, 107,864.82 and 42,352.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,162.60 : 107,864.82 = 42,352.64 : x
2. Step 2: Convert to fraction form
   78,162.60/107,864.82 = 42,352.64/x
3. Step 3: Cross multiply
   78,162.60x = 107,864.82 × 42,352.64
4. Step 4: Simplify right side
   78,162.60x = 4,568,359,890.12
5. Step 5: Solve for x
   x = 4,568,359,890.12/78,162.60
6. Step 6: Final answer
   x = 58,446.88