Finding the Fourth Proportional to 42,275.94, 63,413.76 and 12,693.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,275.94 : 63,413.76 = 12,693.74 : x
2. Step 2: Convert to fraction form
   42,275.94/63,413.76 = 12,693.74/x
3. Step 3: Cross multiply
   42,275.94x = 63,413.76 × 12,693.74
4. Step 4: Simplify right side
   42,275.94x = 804,957,781.86
5. Step 5: Solve for x
   x = 804,957,781.86/42,275.94
6. Step 6: Final answer
   x = 19,040.56