Finding the Fourth Proportional to 70,738.88, 106,112.82 and 20,818.04

Step by Step Solution

1. Step 1: Write the proportion equation
   70,738.88 : 106,112.82 = 20,818.04 : x
2. Step 2: Convert to fraction form
   70,738.88/106,112.82 = 20,818.04/x
3. Step 3: Cross multiply
   70,738.88x = 106,112.82 × 20,818.04
4. Step 4: Simplify right side
   70,738.88x = 2,209,060,931.27
5. Step 5: Solve for x
   x = 2,209,060,931.27/70,738.88
6. Step 6: Final answer
   x = 31,228.38