Finding the Fourth Proportional to 67,910.91, 93,721.61 and 39,236.15

Step by Step Solution

1. Step 1: Write the proportion equation
   67,910.91 : 93,721.61 = 39,236.15 : x
2. Step 2: Convert to fraction form
   67,910.91/93,721.61 = 39,236.15/x
3. Step 3: Cross multiply
   67,910.91x = 93,721.61 × 39,236.15
4. Step 4: Simplify right side
   67,910.91x = 3,677,274,732.71
5. Step 5: Solve for x
   x = 3,677,274,732.71/67,910.91
6. Step 6: Final answer
   x = 54,148.52