Finding the Fourth Proportional to 106,332.47, 159,680.72 and 71,020.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,332.47 : 159,680.72 = 71,020.72 : x
2. Step 2: Convert to fraction form
   106,332.47/159,680.72 = 71,020.72/x
3. Step 3: Cross multiply
   106,332.47x = 159,680.72 × 71,020.72
4. Step 4: Simplify right side
   106,332.47x = 11,340,639,704.52
5. Step 5: Solve for x
   x = 11,340,639,704.52/106,332.47
6. Step 6: Final answer
   x = 106,652.65