Finding the Fourth Proportional to 68,581.83, 102,862.34 and 18,665.81

Step by Step Solution

1. Step 1: Write the proportion equation
   68,581.83 : 102,862.34 = 18,665.81 : x
2. Step 2: Convert to fraction form
   68,581.83/102,862.34 = 18,665.81/x
3. Step 3: Cross multiply
   68,581.83x = 102,862.34 × 18,665.81
4. Step 4: Simplify right side
   68,581.83x = 1,920,009,198.42
5. Step 5: Solve for x
   x = 1,920,009,198.42/68,581.83
6. Step 6: Final answer
   x = 27,995.89