Finding the Fourth Proportional to 172,111.51, 258,159.04 and 65,519.97

Step by Step Solution

1. Step 1: Write the proportion equation
   172,111.51 : 258,159.04 = 65,519.97 : x
2. Step 2: Convert to fraction form
   172,111.51/258,159.04 = 65,519.97/x
3. Step 3: Cross multiply
   172,111.51x = 258,159.04 × 65,519.97
4. Step 4: Simplify right side
   172,111.51x = 16,914,572,556.03
5. Step 5: Solve for x
   x = 16,914,572,556.03/172,111.51
6. Step 6: Final answer
   x = 98,276.82