Finding the Fourth Proportional to 30,785.30, 42,485.91 and 17,357.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,785.30 : 42,485.91 = 17,357.81 : x
2. Step 2: Convert to fraction form
   30,785.30/42,485.91 = 17,357.81/x
3. Step 3: Cross multiply
   30,785.30x = 42,485.91 × 17,357.81
4. Step 4: Simplify right side
   30,785.30x = 737,462,353.46
5. Step 5: Solve for x
   x = 737,462,353.46/30,785.30
6. Step 6: Final answer
   x = 23,955.02