Finding the Fourth Proportional to 395,300.06, 545,513.77 and 214,013.55

Step by Step Solution

1. Step 1: Write the proportion equation
   395,300.06 : 545,513.77 = 214,013.55 : x
2. Step 2: Convert to fraction form
   395,300.06/545,513.77 = 214,013.55/x
3. Step 3: Cross multiply
   395,300.06x = 545,513.77 × 214,013.55
4. Step 4: Simplify right side
   395,300.06x = 116,747,338,491.58
5. Step 5: Solve for x
   x = 116,747,338,491.58/395,300.06
6. Step 6: Final answer
   x = 295,338.53