Finding the Fourth Proportional to 143,401.32, 215,039.81 and 47,311.43

Step by Step Solution

1. Step 1: Write the proportion equation
   143,401.32 : 215,039.81 = 47,311.43 : x
2. Step 2: Convert to fraction form
   143,401.32/215,039.81 = 47,311.43/x
3. Step 3: Cross multiply
   143,401.32x = 215,039.81 × 47,311.43
4. Step 4: Simplify right side
   143,401.32x = 10,173,839,606.27
5. Step 5: Solve for x
   x = 10,173,839,606.27/143,401.32
6. Step 6: Final answer
   x = 70,946.62