Finding the Fourth Proportional to 30,644.51, 42,293.37 and 17,215.76

Step by Step Solution

1. Step 1: Write the proportion equation
   30,644.51 : 42,293.37 = 17,215.76 : x
2. Step 2: Convert to fraction form
   30,644.51/42,293.37 = 17,215.76/x
3. Step 3: Cross multiply
   30,644.51x = 42,293.37 × 17,215.76
4. Step 4: Simplify right side
   30,644.51x = 728,112,507.51
5. Step 5: Solve for x
   x = 728,112,507.51/30,644.51
6. Step 6: Final answer
   x = 23,759.97