Finding the Fourth Proportional to 139,062.74, 208,501.94 and 50,304.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,062.74 : 208,501.94 = 50,304.56 : x
2. Step 2: Convert to fraction form
   139,062.74/208,501.94 = 50,304.56/x
3. Step 3: Cross multiply
   139,062.74x = 208,501.94 × 50,304.56
4. Step 4: Simplify right side
   139,062.74x = 10,488,598,350.85
5. Step 5: Solve for x
   x = 10,488,598,350.85/139,062.74
6. Step 6: Final answer
   x = 75,423.50