Finding the Fourth Proportional to 31,095.76, 42,912.16 and 16,948.60

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095.76 : 42,912.16 = 16,948.60 : x
2. Step 2: Convert to fraction form
   31,095.76/42,912.16 = 16,948.60/x
3. Step 3: Cross multiply
   31,095.76x = 42,912.16 × 16,948.60
4. Step 4: Simplify right side
   31,095.76x = 727,301,034.98
5. Step 5: Solve for x
   x = 727,301,034.98/31,095.76
6. Step 6: Final answer
   x = 23,389.07