Finding the Fourth Proportional to 71,597.78, 98,759.54 and 43,990.34

Step by Step Solution

1. Step 1: Write the proportion equation
   71,597.78 : 98,759.54 = 43,990.34 : x
2. Step 2: Convert to fraction form
   71,597.78/98,759.54 = 43,990.34/x
3. Step 3: Cross multiply
   71,597.78x = 98,759.54 × 43,990.34
4. Step 4: Simplify right side
   71,597.78x = 4,344,466,099.72
5. Step 5: Solve for x
   x = 4,344,466,099.72/71,597.78
6. Step 6: Final answer
   x = 60,678.79