Finding the Fourth Proportional to 31,100.21, 42,916.73 and 17,669.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,100.21 : 42,916.73 = 17,669.69 : x
2. Step 2: Convert to fraction form
   31,100.21/42,916.73 = 17,669.69/x
3. Step 3: Cross multiply
   31,100.21x = 42,916.73 × 17,669.69
4. Step 4: Simplify right side
   31,100.21x = 758,325,144.50
5. Step 5: Solve for x
   x = 758,325,144.50/31,100.21
6. Step 6: Final answer
   x = 24,383.28