Finding the Fourth Proportional to 259,944.03, 389,948.91 and 89,199

Step by Step Solution

1. Step 1: Write the proportion equation
   259,944.03 : 389,948.91 = 89,199 : x
2. Step 2: Convert to fraction form
   259,944.03/389,948.91 = 89,199/x
3. Step 3: Cross multiply
   259,944.03x = 389,948.91 × 89,199
4. Step 4: Simplify right side
   259,944.03x = 34,783,052,488.59
5. Step 5: Solve for x
   x = 34,783,052,488.59/259,944.03
6. Step 6: Final answer
   x = 133,809.78