Finding the Fourth Proportional to 78,571.39, 108,426.42 and 42,760.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,571.39 : 108,426.42 = 42,760.63 : x
2. Step 2: Convert to fraction form
   78,571.39/108,426.42 = 42,760.63/x
3. Step 3: Cross multiply
   78,571.39x = 108,426.42 × 42,760.63
4. Step 4: Simplify right side
   78,571.39x = 4,636,382,027.84
5. Step 5: Solve for x
   x = 4,636,382,027.84/78,571.39
6. Step 6: Final answer
   x = 59,008.53