Finding the Fourth Proportional to 31,104.52, 43,105.75 and 30,513.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,104.52 : 43,105.75 = 30,513.76 : x
2. Step 2: Convert to fraction form
   31,104.52/43,105.75 = 30,513.76/x
3. Step 3: Cross multiply
   31,104.52x = 43,105.75 × 30,513.76
4. Step 4: Simplify right side
   31,104.52x = 1,315,318,510.12
5. Step 5: Solve for x
   x = 1,315,318,510.12/31,104.52
6. Step 6: Final answer
   x = 42,287.05