Finding the Fourth Proportional to 139,069.74, 208,512.42 and 50,311.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,069.74 : 208,512.42 = 50,311.56 : x
2. Step 2: Convert to fraction form
   139,069.74/208,512.42 = 50,311.56/x
3. Step 3: Cross multiply
   139,069.74x = 208,512.42 × 50,311.56
4. Step 4: Simplify right side
   139,069.74x = 10,490,585,129.58
5. Step 5: Solve for x
   x = 10,490,585,129.58/139,069.74
6. Step 6: Final answer
   x = 75,433.99