Finding the Fourth Proportional to 71,392.72, 98,519.47 and 39,564.58

Step by Step Solution

1. Step 1: Write the proportion equation
   71,392.72 : 98,519.47 = 39,564.58 : x
2. Step 2: Convert to fraction form
   71,392.72/98,519.47 = 39,564.58/x
3. Step 3: Cross multiply
   71,392.72x = 98,519.47 × 39,564.58
4. Step 4: Simplify right side
   71,392.72x = 3,897,881,452.37
5. Step 5: Solve for x
   x = 3,897,881,452.37/71,392.72
6. Step 6: Final answer
   x = 54,597.74