Finding the Fourth Proportional to 139,223.97, 208,835.70 and 50,477.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,223.97 : 208,835.70 = 50,477.33 : x
2. Step 2: Convert to fraction form
   139,223.97/208,835.70 = 50,477.33/x
3. Step 3: Cross multiply
   139,223.97x = 208,835.70 × 50,477.33
4. Step 4: Simplify right side
   139,223.97x = 10,541,467,500.50
5. Step 5: Solve for x
   x = 10,541,467,500.50/139,223.97
6. Step 6: Final answer
   x = 75,715.90