Finding the Fourth Proportional to 30,745.74, 42,429.61 and 17,133.80

Step by Step Solution

1. Step 1: Write the proportion equation
   30,745.74 : 42,429.61 = 17,133.80 : x
2. Step 2: Convert to fraction form
   30,745.74/42,429.61 = 17,133.80/x
3. Step 3: Cross multiply
   30,745.74x = 42,429.61 × 17,133.80
4. Step 4: Simplify right side
   30,745.74x = 726,980,164.71
5. Step 5: Solve for x
   x = 726,980,164.71/30,745.74
6. Step 6: Final answer
   x = 23,644.90