Finding the Fourth Proportional to 42,442.87, 63,567.37 and 20,271.93

Step by Step Solution

1. Step 1: Write the proportion equation
   42,442.87 : 63,567.37 = 20,271.93 : x
2. Step 2: Convert to fraction form
   42,442.87/63,567.37 = 20,271.93/x
3. Step 3: Cross multiply
   42,442.87x = 63,567.37 × 20,271.93
4. Step 4: Simplify right side
   42,442.87x = 1,288,632,947.86
5. Step 5: Solve for x
   x = 1,288,632,947.86/42,442.87
6. Step 6: Final answer
   x = 30,361.59