Finding the Fourth Proportional to 42,057.05, 63,075.83 and 12,467.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,057.05 : 63,075.83 = 12,467.75 : x
2. Step 2: Convert to fraction form
   42,057.05/63,075.83 = 12,467.75/x
3. Step 3: Cross multiply
   42,057.05x = 63,075.83 × 12,467.75
4. Step 4: Simplify right side
   42,057.05x = 786,413,395.27
5. Step 5: Solve for x
   x = 786,413,395.27/42,057.05
6. Step 6: Final answer
   x = 18,698.73