Finding the Fourth Proportional to 31,035.42, 42,828.48 and 16,887.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,035.42 : 42,828.48 = 16,887.96 : x
2. Step 2: Convert to fraction form
   31,035.42/42,828.48 = 16,887.96/x
3. Step 3: Cross multiply
   31,035.42x = 42,828.48 × 16,887.96
4. Step 4: Simplify right side
   31,035.42x = 723,285,657.10
5. Step 5: Solve for x
   x = 723,285,657.10/31,035.42
6. Step 6: Final answer
   x = 23,305.17