Finding the Fourth Proportional to 647,243.90, 893,089.89 and 375,200.36

Step by Step Solution

1. Step 1: Write the proportion equation
   647,243.90 : 893,089.89 = 375,200.36 : x
2. Step 2: Convert to fraction form
   647,243.90/893,089.89 = 375,200.36/x
3. Step 3: Cross multiply
   647,243.90x = 893,089.89 × 375,200.36
4. Step 4: Simplify right side
   647,243.90x = 335,087,643,774.91
5. Step 5: Solve for x
   x = 335,087,643,774.91/647,243.90
6. Step 6: Final answer
   x = 517,714.65