Finding the Fourth Proportional to 172,128.52, 256,462.73 and 162,459.62

Step by Step Solution

1. Step 1: Write the proportion equation
   172,128.52 : 256,462.73 = 162,459.62 : x
2. Step 2: Convert to fraction form
   172,128.52/256,462.73 = 162,459.62/x
3. Step 3: Cross multiply
   172,128.52x = 256,462.73 × 162,459.62
4. Step 4: Simplify right side
   172,128.52x = 41,664,839,035.83
5. Step 5: Solve for x
   x = 41,664,839,035.83/172,128.52
6. Step 6: Final answer
   x = 242,056.57