Finding the Fourth Proportional to 139,186.24, 208,890.04 and 50,465.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,186.24 : 208,890.04 = 50,465.12 : x
2. Step 2: Convert to fraction form
   139,186.24/208,890.04 = 50,465.12/x
3. Step 3: Cross multiply
   139,186.24x = 208,890.04 × 50,465.12
4. Step 4: Simplify right side
   139,186.24x = 10,541,660,935.40
5. Step 5: Solve for x
   x = 10,541,660,935.40/139,186.24
6. Step 6: Final answer
   x = 75,737.81