Finding the Fourth Proportional to 71,608.34, 98,817.54 and 39,776.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,608.34 : 98,817.54 = 39,776.42 : x
2. Step 2: Convert to fraction form
   71,608.34/98,817.54 = 39,776.42/x
3. Step 3: Cross multiply
   71,608.34x = 98,817.54 × 39,776.42
4. Step 4: Simplify right side
   71,608.34x = 3,930,607,974.41
5. Step 5: Solve for x
   x = 3,930,607,974.41/71,608.34
6. Step 6: Final answer
   x = 54,890.37