Finding the Fourth Proportional to 139,187.24, 208,891.54 and 50,466.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,187.24 : 208,891.54 = 50,466.12 : x
2. Step 2: Convert to fraction form
   139,187.24/208,891.54 = 50,466.12/x
3. Step 3: Cross multiply
   139,187.24x = 208,891.54 × 50,466.12
4. Step 4: Simplify right side
   139,187.24x = 10,541,945,524.62
5. Step 5: Solve for x
   x = 10,541,945,524.62/139,187.24
6. Step 6: Final answer
   x = 75,739.31