Finding the Fourth Proportional to 31,156.42, 42,994.36 and 17,726.42

Step by Step Solution

1. Step 1: Write the proportion equation
   31,156.42 : 42,994.36 = 17,726.42 : x
2. Step 2: Convert to fraction form
   31,156.42/42,994.36 = 17,726.42/x
3. Step 3: Cross multiply
   31,156.42x = 42,994.36 × 17,726.42
4. Step 4: Simplify right side
   31,156.42x = 762,136,082.99
5. Step 5: Solve for x
   x = 762,136,082.99/31,156.42
6. Step 6: Final answer
   x = 24,461.61