Finding the Fourth Proportional to 386,935.86, 533,960.82 and 231,974.76

Step by Step Solution

1. Step 1: Write the proportion equation
   386,935.86 : 533,960.82 = 231,974.76 : x
2. Step 2: Convert to fraction form
   386,935.86/533,960.82 = 231,974.76/x
3. Step 3: Cross multiply
   386,935.86x = 533,960.82 × 231,974.76
4. Step 4: Simplify right side
   386,935.86x = 123,865,433,068.90
5. Step 5: Solve for x
   x = 123,865,433,068.90/386,935.86
6. Step 6: Final answer
   x = 320,118.77