Finding the Fourth Proportional to 42,483.89, 63,721.69 and 12,901.97

Step by Step Solution

1. Step 1: Write the proportion equation
   42,483.89 : 63,721.69 = 12,901.97 : x
2. Step 2: Convert to fraction form
   42,483.89/63,721.69 = 12,901.97/x
3. Step 3: Cross multiply
   42,483.89x = 63,721.69 × 12,901.97
4. Step 4: Simplify right side
   42,483.89x = 822,135,459.78
5. Step 5: Solve for x
   x = 822,135,459.78/42,483.89
6. Step 6: Final answer
   x = 19,351.70