Finding the Fourth Proportional to 31,285.83, 43,175.15 and 17,856.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,285.83 : 43,175.15 = 17,856.82 : x
2. Step 2: Convert to fraction form
   31,285.83/43,175.15 = 17,856.82/x
3. Step 3: Cross multiply
   31,285.83x = 43,175.15 × 17,856.82
4. Step 4: Simplify right side
   31,285.83x = 770,970,913.67
5. Step 5: Solve for x
   x = 770,970,913.67/31,285.83
6. Step 6: Final answer
   x = 24,642.81