Finding the Fourth Proportional to 30,807.30, 42,475.56 and 25,710.18

Step by Step Solution

1. Step 1: Write the proportion equation
   30,807.30 : 42,475.56 = 25,710.18 : x
2. Step 2: Convert to fraction form
   30,807.30/42,475.56 = 25,710.18/x
3. Step 3: Cross multiply
   30,807.30x = 42,475.56 × 25,710.18
4. Step 4: Simplify right side
   30,807.30x = 1,092,054,293.20
5. Step 5: Solve for x
   x = 1,092,054,293.20/30,807.30
6. Step 6: Final answer
   x = 35,447.91