Finding the Fourth Proportional to 72,601.85, 108,909.50 and 28,231.94

Step by Step Solution

1. Step 1: Write the proportion equation
   72,601.85 : 108,909.50 = 28,231.94 : x
2. Step 2: Convert to fraction form
   72,601.85/108,909.50 = 28,231.94/x
3. Step 3: Cross multiply
   72,601.85x = 108,909.50 × 28,231.94
4. Step 4: Simplify right side
   72,601.85x = 3,074,725,783.72
5. Step 5: Solve for x
   x = 3,074,725,783.72/72,601.85
6. Step 6: Final answer
   x = 42,350.52