Finding the Fourth Proportional to 364,586.01, 503,053.56 and 209,507.31

Step by Step Solution

1. Step 1: Write the proportion equation
   364,586.01 : 503,053.56 = 209,507.31 : x
2. Step 2: Convert to fraction form
   364,586.01/503,053.56 = 209,507.31/x
3. Step 3: Cross multiply
   364,586.01x = 503,053.56 × 209,507.31
4. Step 4: Simplify right side
   364,586.01x = 105,393,398,141.52
5. Step 5: Solve for x
   x = 105,393,398,141.52/364,586.01
6. Step 6: Final answer
   x = 289,076.91