Finding the Fourth Proportional to 30,620.59, 42,253.15 and 17,193.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,620.59 : 42,253.15 = 17,193.31 : x
2. Step 2: Convert to fraction form
   30,620.59/42,253.15 = 17,193.31/x
3. Step 3: Cross multiply
   30,620.59x = 42,253.15 × 17,193.31
4. Step 4: Simplify right side
   30,620.59x = 726,471,506.43
5. Step 5: Solve for x
   x = 726,471,506.43/30,620.59
6. Step 6: Final answer
   x = 23,724.93