Finding the Fourth Proportional to 78,162.74, 107,864.25 and 42,352.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,162.74 : 107,864.25 = 42,352.89 : x
2. Step 2: Convert to fraction form
   78,162.74/107,864.25 = 42,352.89/x
3. Step 3: Cross multiply
   78,162.74x = 107,864.25 × 42,352.89
4. Step 4: Simplify right side
   78,162.74x = 4,568,362,715.18
5. Step 5: Solve for x
   x = 4,568,362,715.18/78,162.74
6. Step 6: Final answer
   x = 58,446.81