Finding the Fourth Proportional to 143,456.06, 215,137.55 and 47,371.67

Step by Step Solution

1. Step 1: Write the proportion equation
   143,456.06 : 215,137.55 = 47,371.67 : x
2. Step 2: Convert to fraction form
   143,456.06/215,137.55 = 47,371.67/x
3. Step 3: Cross multiply
   143,456.06x = 215,137.55 × 47,371.67
4. Step 4: Simplify right side
   143,456.06x = 10,191,424,872.72
5. Step 5: Solve for x
   x = 10,191,424,872.72/143,456.06
6. Step 6: Final answer
   x = 71,042.13