Finding the Fourth Proportional to 31,098.10, 42,916.53 and 17,671.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,098.10 : 42,916.53 = 17,671.63 : x
2. Step 2: Convert to fraction form
   31,098.10/42,916.53 = 17,671.63/x
3. Step 3: Cross multiply
   31,098.10x = 42,916.53 × 17,671.63
4. Step 4: Simplify right side
   31,098.10x = 758,405,039.04
5. Step 5: Solve for x
   x = 758,405,039.04/31,098.10
6. Step 6: Final answer
   x = 24,387.50