Finding the Fourth Proportional to 59,912.32, 89,879.04 and 20,460.18

Step by Step Solution

1. Step 1: Write the proportion equation
   59,912.32 : 89,879.04 = 20,460.18 : x
2. Step 2: Convert to fraction form
   59,912.32/89,879.04 = 20,460.18/x
3. Step 3: Cross multiply
   59,912.32x = 89,879.04 × 20,460.18
4. Step 4: Simplify right side
   59,912.32x = 1,838,941,336.63
5. Step 5: Solve for x
   x = 1,838,941,336.63/59,912.32
6. Step 6: Final answer
   x = 30,693.88