Finding the Fourth Proportional to 72,940.82, 109,367.47 and 28,514.62

Step by Step Solution

1. Step 1: Write the proportion equation
   72,940.82 : 109,367.47 = 28,514.62 : x
2. Step 2: Convert to fraction form
   72,940.82/109,367.47 = 28,514.62/x
3. Step 3: Cross multiply
   72,940.82x = 109,367.47 × 28,514.62
4. Step 4: Simplify right side
   72,940.82x = 3,118,571,502.71
5. Step 5: Solve for x
   x = 3,118,571,502.71/72,940.82
6. Step 6: Final answer
   x = 42,754.82