Finding the Fourth Proportional to 31,245.54, 43,105.14 and 18,663

Step by Step Solution

1. Step 1: Write the proportion equation
   31,245.54 : 43,105.14 = 18,663 : x
2. Step 2: Convert to fraction form
   31,245.54/43,105.14 = 18,663/x
3. Step 3: Cross multiply
   31,245.54x = 43,105.14 × 18,663
4. Step 4: Simplify right side
   31,245.54x = 804,471,227.82
5. Step 5: Solve for x
   x = 804,471,227.82/31,245.54
6. Step 6: Final answer
   x = 25,746.75