Finding the Fourth Proportional to 71,681.01, 98,922.33 and 39,418.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,681.01 : 98,922.33 = 39,418.10 : x
2. Step 2: Convert to fraction form
   71,681.01/98,922.33 = 39,418.10/x
3. Step 3: Cross multiply
   71,681.01x = 98,922.33 × 39,418.10
4. Step 4: Simplify right side
   71,681.01x = 3,899,329,801.56
5. Step 5: Solve for x
   x = 3,899,329,801.56/71,681.01
6. Step 6: Final answer
   x = 54,398.37