Finding the Fourth Proportional to 72,976.41, 109,498.64 and 71,797.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,976.41 : 109,498.64 = 71,797.05 : x
2. Step 2: Convert to fraction form
   72,976.41/109,498.64 = 71,797.05/x
3. Step 3: Cross multiply
   72,976.41x = 109,498.64 × 71,797.05
4. Step 4: Simplify right side
   72,976.41x = 7,861,678,972.03
5. Step 5: Solve for x
   x = 7,861,678,972.03/72,976.41
6. Step 6: Final answer
   x = 107,729.05