Finding the Fourth Proportional to 31,295.31, 43,188.20 and 17,148.15

Step by Step Solution

1. Step 1: Write the proportion equation
   31,295.31 : 43,188.20 = 17,148.15 : x
2. Step 2: Convert to fraction form
   31,295.31/43,188.20 = 17,148.15/x
3. Step 3: Cross multiply
   31,295.31x = 43,188.20 × 17,148.15
4. Step 4: Simplify right side
   31,295.31x = 740,597,646.09
5. Step 5: Solve for x
   x = 740,597,646.09/31,295.31
6. Step 6: Final answer
   x = 23,664.81