Finding the Fourth Proportional to 72,235.53, 99,680.83 and 39,968.27

Step by Step Solution

1. Step 1: Write the proportion equation
   72,235.53 : 99,680.83 = 39,968.27 : x
2. Step 2: Convert to fraction form
   72,235.53/99,680.83 = 39,968.27/x
3. Step 3: Cross multiply
   72,235.53x = 99,680.83 × 39,968.27
4. Step 4: Simplify right side
   72,235.53x = 3,984,070,102.74
5. Step 5: Solve for x
   x = 3,984,070,102.74/72,235.53
6. Step 6: Final answer
   x = 55,153.88