Finding the Fourth Proportional to 139,546.72, 209,320.23 and 50,800.96

Step by Step Solution

1. Step 1: Write the proportion equation
   139,546.72 : 209,320.23 = 50,800.96 : x
2. Step 2: Convert to fraction form
   139,546.72/209,320.23 = 50,800.96/x
3. Step 3: Cross multiply
   139,546.72x = 209,320.23 × 50,800.96
4. Step 4: Simplify right side
   139,546.72x = 10,633,668,631.42
5. Step 5: Solve for x
   x = 10,633,668,631.42/139,546.72
6. Step 6: Final answer
   x = 76,201.49