Finding the Fourth Proportional to 285,978.48, 394,669.01 and 165,124.86

Step by Step Solution

1. Step 1: Write the proportion equation
   285,978.48 : 394,669.01 = 165,124.86 : x
2. Step 2: Convert to fraction form
   285,978.48/394,669.01 = 165,124.86/x
3. Step 3: Cross multiply
   285,978.48x = 394,669.01 × 165,124.86
4. Step 4: Simplify right side
   285,978.48x = 65,169,664,196.96
5. Step 5: Solve for x
   x = 65,169,664,196.96/285,978.48
6. Step 6: Final answer
   x = 227,883.11