Finding the Fourth Proportional to 364,665.41, 503,304.15 and 217,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   364,665.41 : 503,304.15 = 217,499.72 : x
2. Step 2: Convert to fraction form
   364,665.41/503,304.15 = 217,499.72/x
3. Step 3: Cross multiply
   364,665.41x = 503,304.15 × 217,499.72
4. Step 4: Simplify right side
   364,665.41x = 109,468,508,775.51
5. Step 5: Solve for x
   x = 109,468,508,775.51/364,665.41
6. Step 6: Final answer
   x = 300,188.90