Finding the Fourth Proportional to 338,759.82, 508,139.76 and 89,443.98

Step by Step Solution

1. Step 1: Write the proportion equation
   338,759.82 : 508,139.76 = 89,443.98 : x
2. Step 2: Convert to fraction form
   338,759.82/508,139.76 = 89,443.98/x
3. Step 3: Cross multiply
   338,759.82x = 508,139.76 × 89,443.98
4. Step 4: Simplify right side
   338,759.82x = 45,450,042,530.64
5. Step 5: Solve for x
   x = 45,450,042,530.64/338,759.82
6. Step 6: Final answer
   x = 134,165.98