Finding the Fourth Proportional to 172,074, 258,120.72 and 61,266

Step by Step Solution

1. Step 1: Write the proportion equation
   172,074 : 258,120.72 = 61,266 : x
2. Step 2: Convert to fraction form
   172,074/258,120.72 = 61,266/x
3. Step 3: Cross multiply
   172,074x = 258,120.72 × 61,266
4. Step 4: Simplify right side
   172,074x = 15,814,024,031.52
5. Step 5: Solve for x
   x = 15,814,024,031.52/172,074
6. Step 6: Final answer
   x = 91,902.46