Finding the Fourth Proportional to 143,716.15, 215,574.63 and 50,221.90

Step by Step Solution

1. Step 1: Write the proportion equation
   143,716.15 : 215,574.63 = 50,221.90 : x
2. Step 2: Convert to fraction form
   143,716.15/215,574.63 = 50,221.90/x
3. Step 3: Cross multiply
   143,716.15x = 215,574.63 × 50,221.90
4. Step 4: Simplify right side
   143,716.15x = 10,826,567,510.40
5. Step 5: Solve for x
   x = 10,826,567,510.40/143,716.15
6. Step 6: Final answer
   x = 75,332.99