Finding the Fourth Proportional to 139,692.20, 209,535.78 and 50,944.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139,692.20 : 209,535.78 = 50,944.82 : x
2. Step 2: Convert to fraction form
   139,692.20/209,535.78 = 50,944.82/x
3. Step 3: Cross multiply
   139,692.20x = 209,535.78 × 50,944.82
4. Step 4: Simplify right side
   139,692.20x = 10,674,762,595.66
5. Step 5: Solve for x
   x = 10,674,762,595.66/139,692.20
6. Step 6: Final answer
   x = 76,416.31