Finding the Fourth Proportional to 59,867.28, 89,781.48 and 28,272.42

Step by Step Solution

1. Step 1: Write the proportion equation
   59,867.28 : 89,781.48 = 28,272.42 : x
2. Step 2: Convert to fraction form
   59,867.28/89,781.48 = 28,272.42/x
3. Step 3: Cross multiply
   59,867.28x = 89,781.48 × 28,272.42
4. Step 4: Simplify right side
   59,867.28x = 2,538,339,710.78
5. Step 5: Solve for x
   x = 2,538,339,710.78/59,867.28
6. Step 6: Final answer
   x = 42,399.45