Finding the Fourth Proportional to 31,145.33, 42,976.65 and 17,531.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,145.33 : 42,976.65 = 17,531.69 : x
2. Step 2: Convert to fraction form
   31,145.33/42,976.65 = 17,531.69/x
3. Step 3: Cross multiply
   31,145.33x = 42,976.65 × 17,531.69
4. Step 4: Simplify right side
   31,145.33x = 753,453,090.16
5. Step 5: Solve for x
   x = 753,453,090.16/31,145.33
6. Step 6: Final answer
   x = 24,191.53