Finding the Fourth Proportional to 372,702.72, 514,445.82 and 211,665

Step by Step Solution

1. Step 1: Write the proportion equation
   372,702.72 : 514,445.82 = 211,665 : x
2. Step 2: Convert to fraction form
   372,702.72/514,445.82 = 211,665/x
3. Step 3: Cross multiply
   372,702.72x = 514,445.82 × 211,665
4. Step 4: Simplify right side
   372,702.72x = 108,890,174,490.30
5. Step 5: Solve for x
   x = 108,890,174,490.30/372,702.72
6. Step 6: Final answer
   x = 292,163.62