Finding the Fourth Proportional to 42,589.80, 63,922.77 and 42,431.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,589.80 : 63,922.77 = 42,431.04 : x
2. Step 2: Convert to fraction form
   42,589.80/63,922.77 = 42,431.04/x
3. Step 3: Cross multiply
   42,589.80x = 63,922.77 × 42,431.04
4. Step 4: Simplify right side
   42,589.80x = 2,712,309,610.78
5. Step 5: Solve for x
   x = 2,712,309,610.78/42,589.80
6. Step 6: Final answer
   x = 63,684.49