Finding the Fourth Proportional to 287,424.72, 396,658.35 and 160,100.37

Step by Step Solution

1. Step 1: Write the proportion equation
   287,424.72 : 396,658.35 = 160,100.37 : x
2. Step 2: Convert to fraction form
   287,424.72/396,658.35 = 160,100.37/x
3. Step 3: Cross multiply
   287,424.72x = 396,658.35 × 160,100.37
4. Step 4: Simplify right side
   287,424.72x = 63,505,148,598.59
5. Step 5: Solve for x
   x = 63,505,148,598.59/287,424.72
6. Step 6: Final answer
   x = 220,945.33