Finding the Fourth Proportional to 30,534.98, 42,139.10 and 17,105.95

Step by Step Solution

1. Step 1: Write the proportion equation
   30,534.98 : 42,139.10 = 17,105.95 : x
2. Step 2: Convert to fraction form
   30,534.98/42,139.10 = 17,105.95/x
3. Step 3: Cross multiply
   30,534.98x = 42,139.10 × 17,105.95
4. Step 4: Simplify right side
   30,534.98x = 720,829,291.39
5. Step 5: Solve for x
   x = 720,829,291.39/30,534.98
6. Step 6: Final answer
   x = 23,606.67