Finding the Fourth Proportional to 70,799.67, 106,182.50 and 20,866.28

Step by Step Solution

1. Step 1: Write the proportion equation
   70,799.67 : 106,182.50 = 20,866.28 : x
2. Step 2: Convert to fraction form
   70,799.67/106,182.50 = 20,866.28/x
3. Step 3: Cross multiply
   70,799.67x = 106,182.50 × 20,866.28
4. Step 4: Simplify right side
   70,799.67x = 2,215,633,140.86
5. Step 5: Solve for x
   x = 2,215,633,140.86/70,799.67
6. Step 6: Final answer
   x = 31,294.40