Finding the Fourth Proportional to 31,034.70, 42,828.12 and 16,887.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,034.70 : 42,828.12 = 16,887.50 : x
2. Step 2: Convert to fraction form
   31,034.70/42,828.12 = 16,887.50/x
3. Step 3: Cross multiply
   31,034.70x = 42,828.12 × 16,887.50
4. Step 4: Simplify right side
   31,034.70x = 723,259,876.50
5. Step 5: Solve for x
   x = 723,259,876.50/31,034.70
6. Step 6: Final answer
   x = 23,304.88