Finding the Fourth Proportional to 384,862.84, 531,109.38 and 215,096.96

Step by Step Solution

1. Step 1: Write the proportion equation
   384,862.84 : 531,109.38 = 215,096.96 : x
2. Step 2: Convert to fraction form
   384,862.84/531,109.38 = 215,096.96/x
3. Step 3: Cross multiply
   384,862.84x = 531,109.38 × 215,096.96
4. Step 4: Simplify right side
   384,862.84x = 114,240,013,065.49
5. Step 5: Solve for x
   x = 114,240,013,065.49/384,862.84
6. Step 6: Final answer
   x = 296,833.06