Finding the Fourth Proportional to 73,168.88, 109,761.40 and 28,789.80

Step by Step Solution

1. Step 1: Write the proportion equation
   73,168.88 : 109,761.40 = 28,789.80 : x
2. Step 2: Convert to fraction form
   73,168.88/109,761.40 = 28,789.80/x
3. Step 3: Cross multiply
   73,168.88x = 109,761.40 × 28,789.80
4. Step 4: Simplify right side
   73,168.88x = 3,160,008,753.72
5. Step 5: Solve for x
   x = 3,160,008,753.72/73,168.88
6. Step 6: Final answer
   x = 43,187.88