Finding the Fourth Proportional to 80,989.61, 111,777.95 and 49,152.35

Step by Step Solution

1. Step 1: Write the proportion equation
   80,989.61 : 111,777.95 = 49,152.35 : x
2. Step 2: Convert to fraction form
   80,989.61/111,777.95 = 49,152.35/x
3. Step 3: Cross multiply
   80,989.61x = 111,777.95 × 49,152.35
4. Step 4: Simplify right side
   80,989.61x = 5,494,149,323.01
5. Step 5: Solve for x
   x = 5,494,149,323.01/80,989.61
6. Step 6: Final answer
   x = 67,837.71