Finding the Fourth Proportional to 377,196.49, 520,515.30 and 213,863.98

Step by Step Solution

1. Step 1: Write the proportion equation
   377,196.49 : 520,515.30 = 213,863.98 : x
2. Step 2: Convert to fraction form
   377,196.49/520,515.30 = 213,863.98/x
3. Step 3: Cross multiply
   377,196.49x = 520,515.30 × 213,863.98
4. Step 4: Simplify right side
   377,196.49x = 111,319,473,708.89
5. Step 5: Solve for x
   x = 111,319,473,708.89/377,196.49
6. Step 6: Final answer
   x = 295,123.30