Finding the Fourth Proportional to 31,079.54, 42,889.72 and 16,932.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,079.54 : 42,889.72 = 16,932.40 : x
2. Step 2: Convert to fraction form
   31,079.54/42,889.72 = 16,932.40/x
3. Step 3: Cross multiply
   31,079.54x = 42,889.72 × 16,932.40
4. Step 4: Simplify right side
   31,079.54x = 726,225,894.93
5. Step 5: Solve for x
   x = 726,225,894.93/31,079.54
6. Step 6: Final answer
   x = 23,366.69