Finding the Fourth Proportional to 59,648.62, 89,417.31 and 20,178.28

Step by Step Solution

1. Step 1: Write the proportion equation
   59,648.62 : 89,417.31 = 20,178.28 : x
2. Step 2: Convert to fraction form
   59,648.62/89,417.31 = 20,178.28/x
3. Step 3: Cross multiply
   59,648.62x = 89,417.31 × 20,178.28
4. Step 4: Simplify right side
   59,648.62x = 1,804,287,518.03
5. Step 5: Solve for x
   x = 1,804,287,518.03/59,648.62
6. Step 6: Final answer
   x = 30,248.60