Finding the Fourth Proportional to 545,141.42, 817,744.94 and 171,164.42

Step by Step Solution

1. Step 1: Write the proportion equation
   545,141.42 : 817,744.94 = 171,164.42 : x
2. Step 2: Convert to fraction form
   545,141.42/817,744.94 = 171,164.42/x
3. Step 3: Cross multiply
   545,141.42x = 817,744.94 × 171,164.42
4. Step 4: Simplify right side
   545,141.42x = 139,968,838,363.04
5. Step 5: Solve for x
   x = 139,968,838,363.04/545,141.42
6. Step 6: Final answer
   x = 256,756.93