Finding the Fourth Proportional to 395,402.69, 545,654.72 and 214,114.61

Step by Step Solution

1. Step 1: Write the proportion equation
   395,402.69 : 545,654.72 = 214,114.61 : x
2. Step 2: Convert to fraction form
   395,402.69/545,654.72 = 214,114.61/x
3. Step 3: Cross multiply
   395,402.69x = 545,654.72 × 214,114.61
4. Step 4: Simplify right side
   395,402.69x = 116,832,645,374.47
5. Step 5: Solve for x
   x = 116,832,645,374.47/395,402.69
6. Step 6: Final answer
   x = 295,477.62