Finding the Fourth Proportional to 31,008.82, 42,795.78 and 17,400.61

Step by Step Solution

1. Step 1: Write the proportion equation
   31,008.82 : 42,795.78 = 17,400.61 : x
2. Step 2: Convert to fraction form
   31,008.82/42,795.78 = 17,400.61/x
3. Step 3: Cross multiply
   31,008.82x = 42,795.78 × 17,400.61
4. Step 4: Simplify right side
   31,008.82x = 744,672,590.42
5. Step 5: Solve for x
   x = 744,672,590.42/31,008.82
6. Step 6: Final answer
   x = 24,014.87