Finding the Fourth Proportional to 309,685.82, 427,365.73 and 171,885.86

Step by Step Solution

1. Step 1: Write the proportion equation
   309,685.82 : 427,365.73 = 171,885.86 : x
2. Step 2: Convert to fraction form
   309,685.82/427,365.73 = 171,885.86/x
3. Step 3: Cross multiply
   309,685.82x = 427,365.73 × 171,885.86
4. Step 4: Simplify right side
   309,685.82x = 73,458,124,113.61
5. Step 5: Solve for x
   x = 73,458,124,113.61/309,685.82
6. Step 6: Final answer
   x = 237,202.09