Finding the Fourth Proportional to 31,012.18, 42,804.65 and 17,591.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,012.18 : 42,804.65 = 17,591.42 : x
2. Step 2: Convert to fraction form
   31,012.18/42,804.65 = 17,591.42/x
3. Step 3: Cross multiply
   31,012.18x = 42,804.65 × 17,591.42
4. Step 4: Simplify right side
   31,012.18x = 752,994,576.10
5. Step 5: Solve for x
   x = 752,994,576.10/31,012.18
6. Step 6: Final answer
   x = 24,280.61