Finding the Fourth Proportional to 31,005.44, 42,787.81 and 16,858.59

Step by Step Solution

1. Step 1: Write the proportion equation
   31,005.44 : 42,787.81 = 16,858.59 : x
2. Step 2: Convert to fraction form
   31,005.44/42,787.81 = 16,858.59/x
3. Step 3: Cross multiply
   31,005.44x = 42,787.81 × 16,858.59
4. Step 4: Simplify right side
   31,005.44x = 721,342,145.79
5. Step 5: Solve for x
   x = 721,342,145.79/31,005.44
6. Step 6: Final answer
   x = 23,265.02