Finding the Fourth Proportional to 139,532.16, 209,354.16 and 50,791.80

Step by Step Solution

1. Step 1: Write the proportion equation
   139,532.16 : 209,354.16 = 50,791.80 : x
2. Step 2: Convert to fraction form
   139,532.16/209,354.16 = 50,791.80/x
3. Step 3: Cross multiply
   139,532.16x = 209,354.16 × 50,791.80
4. Step 4: Simplify right side
   139,532.16x = 10,633,474,623.89
5. Step 5: Solve for x
   x = 10,633,474,623.89/139,532.16
6. Step 6: Final answer
   x = 76,208.06