Finding the Fourth Proportional to 42,483.69, 63,734.85 and 20,266.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,483.69 : 63,734.85 = 20,266.50 : x
2. Step 2: Convert to fraction form
   42,483.69/63,734.85 = 20,266.50/x
3. Step 3: Cross multiply
   42,483.69x = 63,734.85 × 20,266.50
4. Step 4: Simplify right side
   42,483.69x = 1,291,682,576.53
5. Step 5: Solve for x
   x = 1,291,682,576.53/42,483.69
6. Step 6: Final answer
   x = 30,404.20