Finding the Fourth Proportional to 42,016.92, 63,037.60 and 12,435.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,016.92 : 63,037.60 = 12,435.52 : x
2. Step 2: Convert to fraction form
   42,016.92/63,037.60 = 12,435.52/x
3. Step 3: Cross multiply
   42,016.92x = 63,037.60 × 12,435.52
4. Step 4: Simplify right side
   42,016.92x = 783,905,335.55
5. Step 5: Solve for x
   x = 783,905,335.55/42,016.92
6. Step 6: Final answer
   x = 18,656.90