Finding the Fourth Proportional to 31,095.30, 42,911.40 and 16,948.10

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095.30 : 42,911.40 = 16,948.10 : x
2. Step 2: Convert to fraction form
   31,095.30/42,911.40 = 16,948.10/x
3. Step 3: Cross multiply
   31,095.30x = 42,911.40 × 16,948.10
4. Step 4: Simplify right side
   31,095.30x = 727,266,698.34
5. Step 5: Solve for x
   x = 727,266,698.34/31,095.30
6. Step 6: Final answer
   x = 23,388.32