Finding the Fourth Proportional to 231,986.86, 320,132.18 and 131,384.86

Step by Step Solution

1. Step 1: Write the proportion equation
   231,986.86 : 320,132.18 = 131,384.86 : x
2. Step 2: Convert to fraction form
   231,986.86/320,132.18 = 131,384.86/x
3. Step 3: Cross multiply
   231,986.86x = 320,132.18 × 131,384.86
4. Step 4: Simplify right side
   231,986.86x = 42,060,521,650.79
5. Step 5: Solve for x
   x = 42,060,521,650.79/231,986.86
6. Step 6: Final answer
   x = 181,305.62