Finding the Fourth Proportional to 78,560.37, 108,413.33 and 42,749.61

Step by Step Solution

1. Step 1: Write the proportion equation
   78,560.37 : 108,413.33 = 42,749.61 : x
2. Step 2: Convert to fraction form
   78,560.37/108,413.33 = 42,749.61/x
3. Step 3: Cross multiply
   78,560.37x = 108,413.33 × 42,749.61
4. Step 4: Simplify right side
   78,560.37x = 4,634,627,362.55
5. Step 5: Solve for x
   x = 4,634,627,362.55/78,560.37
6. Step 6: Final answer
   x = 58,994.47