Finding the Fourth Proportional to 72,554.69, 108,811.37 and 28,171.95

Step by Step Solution

1. Step 1: Write the proportion equation
   72,554.69 : 108,811.37 = 28,171.95 : x
2. Step 2: Convert to fraction form
   72,554.69/108,811.37 = 28,171.95/x
3. Step 3: Cross multiply
   72,554.69x = 108,811.37 × 28,171.95
4. Step 4: Simplify right side
   72,554.69x = 3,065,428,334.21
5. Step 5: Solve for x
   x = 3,065,428,334.21/72,554.69
6. Step 6: Final answer
   x = 42,249.90