Finding the Fourth Proportional to 143,621.91, 215,454.87 and 50,105.79

Step by Step Solution

1. Step 1: Write the proportion equation
   143,621.91 : 215,454.87 = 50,105.79 : x
2. Step 2: Convert to fraction form
   143,621.91/215,454.87 = 50,105.79/x
3. Step 3: Cross multiply
   143,621.91x = 215,454.87 × 50,105.79
4. Step 4: Simplify right side
   143,621.91x = 10,795,536,470.70
5. Step 5: Solve for x
   x = 10,795,536,470.70/143,621.91
6. Step 6: Final answer
   x = 75,166.36