Finding the Fourth Proportional to 70,889.89, 106,350.41 and 20,966.10

Step by Step Solution

1. Step 1: Write the proportion equation
   70,889.89 : 106,350.41 = 20,966.10 : x
2. Step 2: Convert to fraction form
   70,889.89/106,350.41 = 20,966.10/x
3. Step 3: Cross multiply
   70,889.89x = 106,350.41 × 20,966.10
4. Step 4: Simplify right side
   70,889.89x = 2,229,752,694.52
5. Step 5: Solve for x
   x = 2,229,752,694.52/70,889.89
6. Step 6: Final answer
   x = 31,453.75