Finding the Fourth Proportional to 30,451.30, 42,026.70 and 17,025.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,451.30 : 42,026.70 = 17,025.31 : x
2. Step 2: Convert to fraction form
   30,451.30/42,026.70 = 17,025.31/x
3. Step 3: Cross multiply
   30,451.30x = 42,026.70 × 17,025.31
4. Step 4: Simplify right side
   30,451.30x = 715,517,595.78
5. Step 5: Solve for x
   x = 715,517,595.78/30,451.30
6. Step 6: Final answer
   x = 23,497.11