Finding the Fourth Proportional to 42,308.73, 63,450.32 and 12,718.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,308.73 : 63,450.32 = 12,718.71 : x
2. Step 2: Convert to fraction form
   42,308.73/63,450.32 = 12,718.71/x
3. Step 3: Cross multiply
   42,308.73x = 63,450.32 × 12,718.71
4. Step 4: Simplify right side
   42,308.73x = 807,006,155.89
5. Step 5: Solve for x
   x = 807,006,155.89/42,308.73
6. Step 6: Final answer
   x = 19,074.22