Finding the Fourth Proportional to 172,357.96, 258,466.18 and 65,780.73

Step by Step Solution

1. Step 1: Write the proportion equation
   172,357.96 : 258,466.18 = 65,780.73 : x
2. Step 2: Convert to fraction form
   172,357.96/258,466.18 = 65,780.73/x
3. Step 3: Cross multiply
   172,357.96x = 258,466.18 × 65,780.73
4. Step 4: Simplify right side
   172,357.96x = 17,002,094,000.71
5. Step 5: Solve for x
   x = 17,002,094,000.71/172,357.96
6. Step 6: Final answer
   x = 98,644.09