Finding the Fourth Proportional to 31,105.52, 43,107.14 and 30,514.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.52 : 43,107.14 = 30,514.76 : x
2. Step 2: Convert to fraction form
   31,105.52/43,107.14 = 30,514.76/x
3. Step 3: Cross multiply
   31,105.52x = 43,107.14 × 30,514.76
4. Step 4: Simplify right side
   31,105.52x = 1,315,404,031.39
5. Step 5: Solve for x
   x = 1,315,404,031.39/31,105.52
6. Step 6: Final answer
   x = 42,288.44