Finding the Fourth Proportional to 72,935.50, 100,651 and 39,401.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,935.50 : 100,651 = 39,401.50 : x
2. Step 2: Convert to fraction form
   72,935.50/100,651 = 39,401.50/x
3. Step 3: Cross multiply
   72,935.50x = 100,651 × 39,401.50
4. Step 4: Simplify right side
   72,935.50x = 3,965,800,376.50
5. Step 5: Solve for x
   x = 3,965,800,376.50/72,935.50
6. Step 6: Final answer
   x = 54,374.08