Finding the Fourth Proportional to 70,748.88, 106,086.81 and 20,822.49

Step by Step Solution

1. Step 1: Write the proportion equation
   70,748.88 : 106,086.81 = 20,822.49 : x
2. Step 2: Convert to fraction form
   70,748.88/106,086.81 = 20,822.49/x
3. Step 3: Cross multiply
   70,748.88x = 106,086.81 × 20,822.49
4. Step 4: Simplify right side
   70,748.88x = 2,208,991,540.36
5. Step 5: Solve for x
   x = 2,208,991,540.36/70,748.88
6. Step 6: Final answer
   x = 31,222.99