Finding the Fourth Proportional to 171,904.32, 257,909.29 and 82,061.69

Step by Step Solution

1. Step 1: Write the proportion equation
   171,904.32 : 257,909.29 = 82,061.69 : x
2. Step 2: Convert to fraction form
   171,904.32/257,909.29 = 82,061.69/x
3. Step 3: Cross multiply
   171,904.32x = 257,909.29 × 82,061.69
4. Step 4: Simplify right side
   171,904.32x = 21,164,470,709.40
5. Step 5: Solve for x
   x = 21,164,470,709.40/171,904.32
6. Step 6: Final answer
   x = 123,117.74