Finding the Fourth Proportional to 277,855.62, 383,419.37 and 157,010.20

Step by Step Solution

1. Step 1: Write the proportion equation
   277,855.62 : 383,419.37 = 157,010.20 : x
2. Step 2: Convert to fraction form
   277,855.62/383,419.37 = 157,010.20/x
3. Step 3: Cross multiply
   277,855.62x = 383,419.37 × 157,010.20
4. Step 4: Simplify right side
   277,855.62x = 60,200,751,401.55
5. Step 5: Solve for x
   x = 60,200,751,401.55/277,855.62
6. Step 6: Final answer
   x = 216,661.99