Finding the Fourth Proportional to 275,131.81, 379,685.91 and 160,407.33

Step by Step Solution

1. Step 1: Write the proportion equation
   275,131.81 : 379,685.91 = 160,407.33 : x
2. Step 2: Convert to fraction form
   275,131.81/379,685.91 = 160,407.33/x
3. Step 3: Cross multiply
   275,131.81x = 379,685.91 × 160,407.33
4. Step 4: Simplify right side
   275,131.81x = 60,904,403,061.72
5. Step 5: Solve for x
   x = 60,904,403,061.72/275,131.81
6. Step 6: Final answer
   x = 221,364.45