Finding the Fourth Proportional to 42,300.14, 63,438.86 and 12,711.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,300.14 : 63,438.86 = 12,711.38 : x
2. Step 2: Convert to fraction form
   42,300.14/63,438.86 = 12,711.38/x
3. Step 3: Cross multiply
   42,300.14x = 63,438.86 × 12,711.38
4. Step 4: Simplify right side
   42,300.14x = 806,395,456.23
5. Step 5: Solve for x
   x = 806,395,456.23/42,300.14
6. Step 6: Final answer
   x = 19,063.66