Finding the Fourth Proportional to 139,353, 209,064.22 and 40,857

Step by Step Solution

1. Step 1: Write the proportion equation
   139,353 : 209,064.22 = 40,857 : x
2. Step 2: Convert to fraction form
   139,353/209,064.22 = 40,857/x
3. Step 3: Cross multiply
   139,353x = 209,064.22 × 40,857
4. Step 4: Simplify right side
   139,353x = 8,541,736,836.54
5. Step 5: Solve for x
   x = 8,541,736,836.54/139,353
6. Step 6: Final answer
   x = 61,295.68