Finding the Fourth Proportional to 31,285, 43,176.90 and 17,858.17

Step by Step Solution

1. Step 1: Write the proportion equation
   31,285 : 43,176.90 = 17,858.17 : x
2. Step 2: Convert to fraction form
   31,285/43,176.90 = 17,858.17/x
3. Step 3: Cross multiply
   31,285x = 43,176.90 × 17,858.17
4. Step 4: Simplify right side
   31,285x = 771,060,420.27
5. Step 5: Solve for x
   x = 771,060,420.27/31,285
6. Step 6: Final answer
   x = 24,646.33