Finding the Fourth Proportional to 78,162.72, 107,864.68 and 42,353.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,162.72 : 107,864.68 = 42,353.04 : x
2. Step 2: Convert to fraction form
   78,162.72/107,864.68 = 42,353.04/x
3. Step 3: Cross multiply
   78,162.72x = 107,864.68 × 42,353.04
4. Step 4: Simplify right side
   78,162.72x = 4,568,397,106.63
5. Step 5: Solve for x
   x = 4,568,397,106.63/78,162.72
6. Step 6: Final answer
   x = 58,447.26