Finding the Fourth Proportional to 162,689.82, 243,945.42 and 50,338.77

Step by Step Solution

1. Step 1: Write the proportion equation
   162,689.82 : 243,945.42 = 50,338.77 : x
2. Step 2: Convert to fraction form
   162,689.82/243,945.42 = 50,338.77/x
3. Step 3: Cross multiply
   162,689.82x = 243,945.42 × 50,338.77
4. Step 4: Simplify right side
   162,689.82x = 12,279,912,389.93
5. Step 5: Solve for x
   x = 12,279,912,389.93/162,689.82
6. Step 6: Final answer
   x = 75,480.52