Finding the Fourth Proportional to 31,117.38, 42,941.98 and 16,970.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,117.38 : 42,941.98 = 16,970.32 : x
2. Step 2: Convert to fraction form
   31,117.38/42,941.98 = 16,970.32/x
3. Step 3: Cross multiply
   31,117.38x = 42,941.98 × 16,970.32
4. Step 4: Simplify right side
   31,117.38x = 728,739,142.03
5. Step 5: Solve for x
   x = 728,739,142.03/31,117.38
6. Step 6: Final answer
   x = 23,419.04