Finding the Fourth Proportional to 31,095, 42,911.28 and 16,948.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095 : 42,911.28 = 16,948.80 : x
2. Step 2: Convert to fraction form
   31,095/42,911.28 = 16,948.80/x
3. Step 3: Cross multiply
   31,095x = 42,911.28 × 16,948.80
4. Step 4: Simplify right side
   31,095x = 727,294,702.46
5. Step 5: Solve for x
   x = 727,294,702.46/31,095
6. Step 6: Final answer
   x = 23,389.44