Finding the Fourth Proportional to 404,213.32, 557,853.80 and 302,061.40

Step by Step Solution

1. Step 1: Write the proportion equation
   404,213.32 : 557,853.80 = 302,061.40 : x
2. Step 2: Convert to fraction form
   404,213.32/557,853.80 = 302,061.40/x
3. Step 3: Cross multiply
   404,213.32x = 557,853.80 × 302,061.40
4. Step 4: Simplify right side
   404,213.32x = 168,506,099,823.32
5. Step 5: Solve for x
   x = 168,506,099,823.32/404,213.32
6. Step 6: Final answer
   x = 416,874.19