Finding the Fourth Proportional to 78,674.27, 108,571.74 and 42,864.27

Step by Step Solution

1. Step 1: Write the proportion equation
   78,674.27 : 108,571.74 = 42,864.27 : x
2. Step 2: Convert to fraction form
   78,674.27/108,571.74 = 42,864.27/x
3. Step 3: Cross multiply
   78,674.27x = 108,571.74 × 42,864.27
4. Step 4: Simplify right side
   78,674.27x = 4,653,848,377.73
5. Step 5: Solve for x
   x = 4,653,848,377.73/78,674.27
6. Step 6: Final answer
   x = 59,153.37