Finding the Fourth Proportional to 172,144.17, 257,423.54 and 163,746.09

Step by Step Solution

1. Step 1: Write the proportion equation
   172,144.17 : 257,423.54 = 163,746.09 : x
2. Step 2: Convert to fraction form
   172,144.17/257,423.54 = 163,746.09/x
3. Step 3: Cross multiply
   172,144.17x = 257,423.54 × 163,746.09
4. Step 4: Simplify right side
   172,144.17x = 42,152,097,330.23
5. Step 5: Solve for x
   x = 42,152,097,330.23/172,144.17
6. Step 6: Final answer
   x = 244,865.09