Finding the Fourth Proportional to 30,935.30, 42,690.69 and 17,506.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,935.30 : 42,690.69 = 17,506.31 : x
2. Step 2: Convert to fraction form
   30,935.30/42,690.69 = 17,506.31/x
3. Step 3: Cross multiply
   30,935.30x = 42,690.69 × 17,506.31
4. Step 4: Simplify right side
   30,935.30x = 747,356,559.98
5. Step 5: Solve for x
   x = 747,356,559.98/30,935.30
6. Step 6: Final answer
   x = 24,158.70