Finding the Fourth Proportional to 42,464.01, 63,688.82 and 12,874.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,464.01 : 63,688.82 = 12,874.71 : x
2. Step 2: Convert to fraction form
   42,464.01/63,688.82 = 12,874.71/x
3. Step 3: Cross multiply
   42,464.01x = 63,688.82 × 12,874.71
4. Step 4: Simplify right side
   42,464.01x = 819,975,087.74
5. Step 5: Solve for x
   x = 819,975,087.74/42,464.01
6. Step 6: Final answer
   x = 19,309.88