Finding the Fourth Proportional to 282,726.86, 390,152.70 and 155,401.34

Step by Step Solution

1. Step 1: Write the proportion equation
   282,726.86 : 390,152.70 = 155,401.34 : x
2. Step 2: Convert to fraction form
   282,726.86/390,152.70 = 155,401.34/x
3. Step 3: Cross multiply
   282,726.86x = 390,152.70 × 155,401.34
4. Step 4: Simplify right side
   282,726.86x = 60,630,250,433.85
5. Step 5: Solve for x
   x = 60,630,250,433.85/282,726.86
6. Step 6: Final answer
   x = 214,448.15