Finding the Fourth Proportional to 31,241.69, 43,133.27 and 19,311.81

Step by Step Solution

1. Step 1: Write the proportion equation
   31,241.69 : 43,133.27 = 19,311.81 : x
2. Step 2: Convert to fraction form
   31,241.69/43,133.27 = 19,311.81/x
3. Step 3: Cross multiply
   31,241.69x = 43,133.27 × 19,311.81
4. Step 4: Simplify right side
   31,241.69x = 832,981,514.92
5. Step 5: Solve for x
   x = 832,981,514.92/31,241.69
6. Step 6: Final answer
   x = 26,662.50