Finding the Fourth Proportional to 338,578.72, 508,101.78 and 116,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   338,578.72 : 508,101.78 = 116,962.72 : x
2. Step 2: Convert to fraction form
   338,578.72/508,101.78 = 116,962.72/x
3. Step 3: Cross multiply
   338,578.72x = 508,101.78 × 116,962.72
4. Step 4: Simplify right side
   338,578.72x = 59,428,966,225.64
5. Step 5: Solve for x
   x = 59,428,966,225.64/338,578.72
6. Step 6: Final answer
   x = 175,524.81