Finding the Fourth Proportional to 42,651.16, 63,990.87 and 13,069.27

Step by Step Solution

1. Step 1: Write the proportion equation
   42,651.16 : 63,990.87 = 13,069.27 : x
2. Step 2: Convert to fraction form
   42,651.16/63,990.87 = 13,069.27/x
3. Step 3: Cross multiply
   42,651.16x = 63,990.87 × 13,069.27
4. Step 4: Simplify right side
   42,651.16x = 836,313,957.56
5. Step 5: Solve for x
   x = 836,313,957.56/42,651.16
6. Step 6: Final answer
   x = 19,608.23