Finding the Fourth Proportional to 31,035.57, 42,829.98 and 16,889.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,035.57 : 42,829.98 = 16,889.31 : x
2. Step 2: Convert to fraction form
   31,035.57/42,829.98 = 16,889.31/x
3. Step 3: Cross multiply
   31,035.57x = 42,829.98 × 16,889.31
4. Step 4: Simplify right side
   31,035.57x = 723,368,809.51
5. Step 5: Solve for x
   x = 723,368,809.51/31,035.57
6. Step 6: Final answer
   x = 23,307.73