Finding the Fourth Proportional to 139,268.20, 208,852.62 and 50,498.68

Step by Step Solution

1. Step 1: Write the proportion equation
   139,268.20 : 208,852.62 = 50,498.68 : x
2. Step 2: Convert to fraction form
   139,268.20/208,852.62 = 50,498.68/x
3. Step 3: Cross multiply
   139,268.20x = 208,852.62 × 50,498.68
4. Step 4: Simplify right side
   139,268.20x = 10,546,781,624.54
5. Step 5: Solve for x
   x = 10,546,781,624.54/139,268.20
6. Step 6: Final answer
   x = 75,730.01