Finding the Fourth Proportional to 71,701, 98,942.70 and 39,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,701 : 98,942.70 = 39,868.72 : x
2. Step 2: Convert to fraction form
   71,701/98,942.70 = 39,868.72/x
3. Step 3: Cross multiply
   71,701x = 98,942.70 × 39,868.72
4. Step 4: Simplify right side
   71,701x = 3,944,718,802.34
5. Step 5: Solve for x
   x = 3,944,718,802.34/71,701
6. Step 6: Final answer
   x = 55,016.23