Finding the Fourth Proportional to 78,673.77, 108,571.05 and 42,863.77

Step by Step Solution

1. Step 1: Write the proportion equation
   78,673.77 : 108,571.05 = 42,863.77 : x
2. Step 2: Convert to fraction form
   78,673.77/108,571.05 = 42,863.77/x
3. Step 3: Cross multiply
   78,673.77x = 108,571.05 × 42,863.77
4. Step 4: Simplify right side
   78,673.77x = 4,653,764,515.86
5. Step 5: Solve for x
   x = 4,653,764,515.86/78,673.77
6. Step 6: Final answer
   x = 59,152.68