Finding the Fourth Proportional to 59,665.12, 89,499.68 and 18,112

Step by Step Solution

1. Step 1: Write the proportion equation
   59,665.12 : 89,499.68 = 18,112 : x
2. Step 2: Convert to fraction form
   59,665.12/89,499.68 = 18,112/x
3. Step 3: Cross multiply
   59,665.12x = 89,499.68 × 18,112
4. Step 4: Simplify right side
   59,665.12x = 1,621,018,204.16
5. Step 5: Solve for x
   x = 1,621,018,204.16/59,665.12
6. Step 6: Final answer
   x = 27,168.61