Finding the Fourth Proportional to 82,503.20, 123,756.72 and 20,174.24

Step by Step Solution

1. Step 1: Write the proportion equation
   82,503.20 : 123,756.72 = 20,174.24 : x
2. Step 2: Convert to fraction form
   82,503.20/123,756.72 = 20,174.24/x
3. Step 3: Cross multiply
   82,503.20x = 123,756.72 × 20,174.24
4. Step 4: Simplify right side
   82,503.20x = 2,496,697,770.89
5. Step 5: Solve for x
   x = 2,496,697,770.89/82,503.20
6. Step 6: Final answer
   x = 30,261.83