Finding the Fourth Proportional to 172,171.82, 258,257.39 and 45,812.06

Step by Step Solution

1. Step 1: Write the proportion equation
   172,171.82 : 258,257.39 = 45,812.06 : x
2. Step 2: Convert to fraction form
   172,171.82/258,257.39 = 45,812.06/x
3. Step 3: Cross multiply
   172,171.82x = 258,257.39 × 45,812.06
4. Step 4: Simplify right side
   172,171.82x = 11,831,301,525.78
5. Step 5: Solve for x
   x = 11,831,301,525.78/172,171.82
6. Step 6: Final answer
   x = 68,717.99