Finding the Fourth Proportional to 42,057.16, 63,076.02 and 12,467.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,057.16 : 63,076.02 = 12,467.86 : x
2. Step 2: Convert to fraction form
   42,057.16/63,076.02 = 12,467.86/x
3. Step 3: Cross multiply
   42,057.16x = 63,076.02 × 12,467.86
4. Step 4: Simplify right side
   42,057.16x = 786,422,986.72
5. Step 5: Solve for x
   x = 786,422,986.72/42,057.16
6. Step 6: Final answer
   x = 18,698.91