Finding the Fourth Proportional to 67,721.67, 93,456.72 and 39,426.75

Step by Step Solution

1. Step 1: Write the proportion equation
   67,721.67 : 93,456.72 = 39,426.75 : x
2. Step 2: Convert to fraction form
   67,721.67/93,456.72 = 39,426.75/x
3. Step 3: Cross multiply
   67,721.67x = 93,456.72 × 39,426.75
4. Step 4: Simplify right side
   67,721.67x = 3,684,694,735.26
5. Step 5: Solve for x
   x = 3,684,694,735.26/67,721.67
6. Step 6: Final answer
   x = 54,409.39