Finding the Fourth Proportional to 172,362.72, 258,536.56 and 54,031.36

Step by Step Solution

1. Step 1: Write the proportion equation
   172,362.72 : 258,536.56 = 54,031.36 : x
2. Step 2: Convert to fraction form
   172,362.72/258,536.56 = 54,031.36/x
3. Step 3: Cross multiply
   172,362.72x = 258,536.56 × 54,031.36
4. Step 4: Simplify right side
   172,362.72x = 13,969,081,946.52
5. Step 5: Solve for x
   x = 13,969,081,946.52/172,362.72
6. Step 6: Final answer
   x = 81,044.68