Finding the Fourth Proportional to 377,198.50, 520,518.06 and 213,865.98

Step by Step Solution

1. Step 1: Write the proportion equation
   377,198.50 : 520,518.06 = 213,865.98 : x
2. Step 2: Convert to fraction form
   377,198.50/520,518.06 = 213,865.98/x
3. Step 3: Cross multiply
   377,198.50x = 520,518.06 × 213,865.98
4. Step 4: Simplify right side
   377,198.50x = 111,321,105,009.60
5. Step 5: Solve for x
   x = 111,321,105,009.60/377,198.50
6. Step 6: Final answer
   x = 295,126.05