Finding the Fourth Proportional to 72,989.88, 100,729.49 and 41,158.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,989.88 : 100,729.49 = 41,158.10 : x
2. Step 2: Convert to fraction form
   72,989.88/100,729.49 = 41,158.10/x
3. Step 3: Cross multiply
   72,989.88x = 100,729.49 × 41,158.10
4. Step 4: Simplify right side
   72,989.88x = 4,145,833,815.83
5. Step 5: Solve for x
   x = 4,145,833,815.83/72,989.88
6. Step 6: Final answer
   x = 56,800.12