Finding the Fourth Proportional to 31,093.71, 42,906.60 and 17,293.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,093.71 : 42,906.60 = 17,293.40 : x
2. Step 2: Convert to fraction form
   31,093.71/42,906.60 = 17,293.40/x
3. Step 3: Cross multiply
   31,093.71x = 42,906.60 × 17,293.40
4. Step 4: Simplify right side
   31,093.71x = 742,000,825.14
5. Step 5: Solve for x
   x = 742,000,825.14/31,093.71
6. Step 6: Final answer
   x = 23,863.38