Finding the Fourth Proportional to 283,856.47, 425,302.71 and 171,300.17

Step by Step Solution

1. Step 1: Write the proportion equation
   283,856.47 : 425,302.71 = 171,300.17 : x
2. Step 2: Convert to fraction form
   283,856.47/425,302.71 = 171,300.17/x
3. Step 3: Cross multiply
   283,856.47x = 425,302.71 × 171,300.17
4. Step 4: Simplify right side
   283,856.47x = 72,854,426,524.46
5. Step 5: Solve for x
   x = 72,854,426,524.46/283,856.47
6. Step 6: Final answer
   x = 256,659.38