Finding the Fourth Proportional to 80,561.37, 111,156.80 and 48,729.59

Step by Step Solution

1. Step 1: Write the proportion equation
   80,561.37 : 111,156.80 = 48,729.59 : x
2. Step 2: Convert to fraction form
   80,561.37/111,156.80 = 48,729.59/x
3. Step 3: Cross multiply
   80,561.37x = 111,156.80 × 48,729.59
4. Step 4: Simplify right side
   80,561.37x = 5,416,624,490.28
5. Step 5: Solve for x
   x = 5,416,624,490.28/80,561.37
6. Step 6: Final answer
   x = 67,236.00