Finding the Fourth Proportional to 31,095.16, 42,911.56 and 16,947.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,095.16 : 42,911.56 = 16,947.96 : x
2. Step 2: Convert to fraction form
   31,095.16/42,911.56 = 16,947.96/x
3. Step 3: Cross multiply
   31,095.16x = 42,911.56 × 16,947.96
4. Step 4: Simplify right side
   31,095.16x = 727,263,402.42
5. Step 5: Solve for x
   x = 727,263,402.42/31,095.16
6. Step 6: Final answer
   x = 23,388.32