Finding the Fourth Proportional to 404,778, 607,196.16 and 155,460

Step by Step Solution

1. Step 1: Write the proportion equation
   404,778 : 607,196.16 = 155,460 : x
2. Step 2: Convert to fraction form
   404,778/607,196.16 = 155,460/x
3. Step 3: Cross multiply
   404,778x = 607,196.16 × 155,460
4. Step 4: Simplify right side
   404,778x = 94,394,715,033.60
5. Step 5: Solve for x
   x = 94,394,715,033.60/404,778
6. Step 6: Final answer
   x = 233,201.20