Finding the Fourth Proportional to 31,100.47, 42,918.59 and 17,488.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.47 : 42,918.59 = 17,488.56 : x
2. Step 2: Convert to fraction form
   31,100.47/42,918.59 = 17,488.56/x
3. Step 3: Cross multiply
   31,100.47x = 42,918.59 × 17,488.56
4. Step 4: Simplify right side
   31,100.47x = 750,584,248.89
5. Step 5: Solve for x
   x = 750,584,248.89/31,100.47
6. Step 6: Final answer
   x = 24,134.18