Finding the Fourth Proportional to 71,637.34, 98,857.56 and 39,805.42

Step by Step Solution

1. Step 1: Write the proportion equation
   71,637.34 : 98,857.56 = 39,805.42 : x
2. Step 2: Convert to fraction form
   71,637.34/98,857.56 = 39,805.42/x
3. Step 3: Cross multiply
   71,637.34x = 98,857.56 × 39,805.42
4. Step 4: Simplify right side
   71,637.34x = 3,935,066,695.98
5. Step 5: Solve for x
   x = 3,935,066,695.98/71,637.34
6. Step 6: Final answer
   x = 54,930.39