Finding the Fourth Proportional to 139,062.62, 208,470.20 and 50,296.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,062.62 : 208,470.20 = 50,296.38 : x
2. Step 2: Convert to fraction form
   139,062.62/208,470.20 = 50,296.38/x
3. Step 3: Cross multiply
   139,062.62x = 208,470.20 × 50,296.38
4. Step 4: Simplify right side
   139,062.62x = 10,485,296,397.88
5. Step 5: Solve for x
   x = 10,485,296,397.88/139,062.62
6. Step 6: Final answer
   x = 75,399.82