Finding the Fourth Proportional to 72,964.12, 109,451.82 and 28,007.10

Step by Step Solution

1. Step 1: Write the proportion equation
   72,964.12 : 109,451.82 = 28,007.10 : x
2. Step 2: Convert to fraction form
   72,964.12/109,451.82 = 28,007.10/x
3. Step 3: Cross multiply
   72,964.12x = 109,451.82 × 28,007.10
4. Step 4: Simplify right side
   72,964.12x = 3,065,428,067.92
5. Step 5: Solve for x
   x = 3,065,428,067.92/72,964.12
6. Step 6: Final answer
   x = 42,012.81