Finding the Fourth Proportional to 30,760.23, 42,443.98 and 17,145.33

Step by Step Solution

1. Step 1: Write the proportion equation
   30,760.23 : 42,443.98 = 17,145.33 : x
2. Step 2: Convert to fraction form
   30,760.23/42,443.98 = 17,145.33/x
3. Step 3: Cross multiply
   30,760.23x = 42,443.98 × 17,145.33
4. Step 4: Simplify right side
   30,760.23x = 727,716,043.61
5. Step 5: Solve for x
   x = 727,716,043.61/30,760.23
6. Step 6: Final answer
   x = 23,657.69