Finding the Fourth Proportional to 42,622.20, 63,808.92 and 28,406.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,622.20 : 63,808.92 = 28,406.52 : x
2. Step 2: Convert to fraction form
   42,622.20/63,808.92 = 28,406.52/x
3. Step 3: Cross multiply
   42,622.20x = 63,808.92 × 28,406.52
4. Step 4: Simplify right side
   42,622.20x = 1,812,589,362.16
5. Step 5: Solve for x
   x = 1,812,589,362.16/42,622.20
6. Step 6: Final answer
   x = 42,526.88