Finding the Fourth Proportional to 30,513.51, 42,103.73 and 17,085.33

Step by Step Solution

1. Step 1: Write the proportion equation
   30,513.51 : 42,103.73 = 17,085.33 : x
2. Step 2: Convert to fraction form
   30,513.51/42,103.73 = 17,085.33/x
3. Step 3: Cross multiply
   30,513.51x = 42,103.73 × 17,085.33
4. Step 4: Simplify right side
   30,513.51x = 719,356,163.99
5. Step 5: Solve for x
   x = 719,356,163.99/30,513.51
6. Step 6: Final answer
   x = 23,575.01