Finding the Fourth Proportional to 139,208.76, 208,812.90 and 50,462.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,208.76 : 208,812.90 = 50,462.04 : x
2. Step 2: Convert to fraction form
   139,208.76/208,812.90 = 50,462.04/x
3. Step 3: Cross multiply
   139,208.76x = 208,812.90 × 50,462.04
4. Step 4: Simplify right side
   139,208.76x = 10,537,124,912.32
5. Step 5: Solve for x
   x = 10,537,124,912.32/139,208.76
6. Step 6: Final answer
   x = 75,692.97