Finding the Fourth Proportional to 139,060.62, 208,467.21 and 50,294.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139,060.62 : 208,467.21 = 50,294.38 : x
2. Step 2: Convert to fraction form
   139,060.62/208,467.21 = 50,294.38/x
3. Step 3: Cross multiply
   139,060.62x = 208,467.21 × 50,294.38
4. Step 4: Simplify right side
   139,060.62x = 10,484,729,077.28
5. Step 5: Solve for x
   x = 10,484,729,077.28/139,060.62
6. Step 6: Final answer
   x = 75,396.82