Finding the Fourth Proportional to 275,683.59, 380,451.89 and 154,827.47

Step by Step Solution

1. Step 1: Write the proportion equation
   275,683.59 : 380,451.89 = 154,827.47 : x
2. Step 2: Convert to fraction form
   275,683.59/380,451.89 = 154,827.47/x
3. Step 3: Cross multiply
   275,683.59x = 380,451.89 × 154,827.47
4. Step 4: Simplify right side
   275,683.59x = 58,904,400,909.02
5. Step 5: Solve for x
   x = 58,904,400,909.02/275,683.59
6. Step 6: Final answer
   x = 213,666.69