Finding the Fourth Proportional to 71,447.78, 98,597.94 and 39,615.98

Step by Step Solution

1. Step 1: Write the proportion equation
   71,447.78 : 98,597.94 = 39,615.98 : x
2. Step 2: Convert to fraction form
   71,447.78/98,597.94 = 39,615.98/x
3. Step 3: Cross multiply
   71,447.78x = 98,597.94 × 39,615.98
4. Step 4: Simplify right side
   71,447.78x = 3,906,054,019.08
5. Step 5: Solve for x
   x = 3,906,054,019.08/71,447.78
6. Step 6: Final answer
   x = 54,670.05