Finding the Fourth Proportional to 647,577.34, 893,662.53 and 357,200.03

Step by Step Solution

1. Step 1: Write the proportion equation
   647,577.34 : 893,662.53 = 357,200.03 : x
2. Step 2: Convert to fraction form
   647,577.34/893,662.53 = 357,200.03/x
3. Step 3: Cross multiply
   647,577.34x = 893,662.53 × 357,200.03
4. Step 4: Simplify right side
   647,577.34x = 319,216,282,525.88
5. Step 5: Solve for x
   x = 319,216,282,525.88/647,577.34
6. Step 6: Final answer
   x = 492,939.24