Finding the Fourth Proportional to 143,621.28, 215,334.72 and 50,076

Step by Step Solution

1. Step 1: Write the proportion equation
   143,621.28 : 215,334.72 = 50,076 : x
2. Step 2: Convert to fraction form
   143,621.28/215,334.72 = 50,076/x
3. Step 3: Cross multiply
   143,621.28x = 215,334.72 × 50,076
4. Step 4: Simplify right side
   143,621.28x = 10,783,101,438.72
5. Step 5: Solve for x
   x = 10,783,101,438.72/143,621.28
6. Step 6: Final answer
   x = 75,080.11