Finding the Fourth Proportional to 59,618.31, 89,431.62 and 20,162.10

Step by Step Solution

1. Step 1: Write the proportion equation
   59,618.31 : 89,431.62 = 20,162.10 : x
2. Step 2: Convert to fraction form
   59,618.31/89,431.62 = 20,162.10/x
3. Step 3: Cross multiply
   59,618.31x = 89,431.62 × 20,162.10
4. Step 4: Simplify right side
   59,618.31x = 1,803,129,265.60
5. Step 5: Solve for x
   x = 1,803,129,265.60/59,618.31
6. Step 6: Final answer
   x = 30,244.56