Finding the Fourth Proportional to 371,738.50, 556,401.35 and 200,722.48

Step by Step Solution

1. Step 1: Write the proportion equation
   371,738.50 : 556,401.35 = 200,722.48 : x
2. Step 2: Convert to fraction form
   371,738.50/556,401.35 = 200,722.48/x
3. Step 3: Cross multiply
   371,738.50x = 556,401.35 × 200,722.48
4. Step 4: Simplify right side
   371,738.50x = 111,682,256,065.34
5. Step 5: Solve for x
   x = 111,682,256,065.34/371,738.50
6. Step 6: Final answer
   x = 300,432.31