Finding the Fourth Proportional to 42,481, 63,728.79 and 12,901.83

Step by Step Solution

1. Step 1: Write the proportion equation
   42,481 : 63,728.79 = 12,901.83 : x
2. Step 2: Convert to fraction form
   42,481/63,728.79 = 12,901.83/x
3. Step 3: Cross multiply
   42,481x = 63,728.79 × 12,901.83
4. Step 4: Simplify right side
   42,481x = 822,218,014.69
5. Step 5: Solve for x
   x = 822,218,014.69/42,481
6. Step 6: Final answer
   x = 19,354.96