Finding the Fourth Proportional to 139,065.62, 208,474.70 and 50,299.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,065.62 : 208,474.70 = 50,299.38 : x
2. Step 2: Convert to fraction form
   139,065.62/208,474.70 = 50,299.38/x
3. Step 3: Cross multiply
   139,065.62x = 208,474.70 × 50,299.38
4. Step 4: Simplify right side
   139,065.62x = 10,486,148,155.69
5. Step 5: Solve for x
   x = 10,486,148,155.69/139,065.62
6. Step 6: Final answer
   x = 75,404.32