Finding the Fourth Proportional to 139,062.71, 208,470.33 and 50,296.48

Step by Step Solution

1. Step 1: Write the proportion equation
   139,062.71 : 208,470.33 = 50,296.48 : x
2. Step 2: Convert to fraction form
   139,062.71/208,470.33 = 50,296.48/x
3. Step 3: Cross multiply
   139,062.71x = 208,470.33 × 50,296.48
4. Step 4: Simplify right side
   139,062.71x = 10,485,323,262.26
5. Step 5: Solve for x
   x = 10,485,323,262.26/139,062.71
6. Step 6: Final answer
   x = 75,399.96