Finding the Fourth Proportional to 42,046.47, 63,067.88 and 10,455.87

Step by Step Solution

1. Step 1: Write the proportion equation
   42,046.47 : 63,067.88 = 10,455.87 : x
2. Step 2: Convert to fraction form
   42,046.47/63,067.88 = 10,455.87/x
3. Step 3: Cross multiply
   42,046.47x = 63,067.88 × 10,455.87
4. Step 4: Simplify right side
   42,046.47x = 659,429,502.18
5. Step 5: Solve for x
   x = 659,429,502.18/42,046.47
6. Step 6: Final answer
   x = 15,683.35