Finding the Fourth Proportional to 71,386.48, 98,519.34 and 39,558.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,386.48 : 98,519.34 = 39,558.34 : x
2. Step 2: Convert to fraction form
   71,386.48/98,519.34 = 39,558.34/x
3. Step 3: Cross multiply
   71,386.48x = 98,519.34 × 39,558.34
4. Step 4: Simplify right side
   71,386.48x = 3,897,261,548.30
5. Step 5: Solve for x
   x = 3,897,261,548.30/71,386.48
6. Step 6: Final answer
   x = 54,593.83