Finding the Fourth Proportional to 173,442.50, 259,956.66 and 89,243

Step by Step Solution

1. Step 1: Write the proportion equation
   173,442.50 : 259,956.66 = 89,243 : x
2. Step 2: Convert to fraction form
   173,442.50/259,956.66 = 89,243/x
3. Step 3: Cross multiply
   173,442.50x = 259,956.66 × 89,243
4. Step 4: Simplify right side
   173,442.50x = 23,199,312,208.38
5. Step 5: Solve for x
   x = 23,199,312,208.38/173,442.50
6. Step 6: Final answer
   x = 133,757.94