Finding the Fourth Proportional to 139,105, 208,697.82 and 40,609

Step by Step Solution

1. Step 1: Write the proportion equation
   139,105 : 208,697.82 = 40,609 : x
2. Step 2: Convert to fraction form
   139,105/208,697.82 = 40,609/x
3. Step 3: Cross multiply
   139,105x = 208,697.82 × 40,609
4. Step 4: Simplify right side
   139,105x = 8,475,009,772.38
5. Step 5: Solve for x
   x = 8,475,009,772.38/139,105
6. Step 6: Final answer
   x = 60,925.27