Finding the Fourth Proportional to 72,578.52, 108,816.75 and 28,167.84

Step by Step Solution

1. Step 1: Write the proportion equation
   72,578.52 : 108,816.75 = 28,167.84 : x
2. Step 2: Convert to fraction form
   72,578.52/108,816.75 = 28,167.84/x
3. Step 3: Cross multiply
   72,578.52x = 108,816.75 × 28,167.84
4. Step 4: Simplify right side
   72,578.52x = 3,065,132,803.32
5. Step 5: Solve for x
   x = 3,065,132,803.32/72,578.52
6. Step 6: Final answer
   x = 42,231.96