Finding the Fourth Proportional to 358,105.05, 494,019.30 and 214,615.98

Step by Step Solution

1. Step 1: Write the proportion equation
   358,105.05 : 494,019.30 = 214,615.98 : x
2. Step 2: Convert to fraction form
   358,105.05/494,019.30 = 214,615.98/x
3. Step 3: Cross multiply
   358,105.05x = 494,019.30 × 214,615.98
4. Step 4: Simplify right side
   358,105.05x = 106,024,437,013.22
5. Step 5: Solve for x
   x = 106,024,437,013.22/358,105.05
6. Step 6: Final answer
   x = 296,070.77