Finding the Fourth Proportional to 72,907.94, 109,358.27 and 28,542.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,907.94 : 109,358.27 = 28,542.83 : x
2. Step 2: Convert to fraction form
   72,907.94/109,358.27 = 28,542.83/x
3. Step 3: Cross multiply
   72,907.94x = 109,358.27 × 28,542.83
4. Step 4: Simplify right side
   72,907.94x = 3,121,393,962.91
5. Step 5: Solve for x
   x = 3,121,393,962.91/72,907.94
6. Step 6: Final answer
   x = 42,812.81