Finding the Fourth Proportional to 384,142.69, 530,103.02 and 212,056.96

Step by Step Solution

1. Step 1: Write the proportion equation
   384,142.69 : 530,103.02 = 212,056.96 : x
2. Step 2: Convert to fraction form
   384,142.69/530,103.02 = 212,056.96/x
3. Step 3: Cross multiply
   384,142.69x = 530,103.02 × 212,056.96
4. Step 4: Simplify right side
   384,142.69x = 112,412,036,100.79
5. Step 5: Solve for x
   x = 112,412,036,100.79/384,142.69
6. Step 6: Final answer
   x = 292,630.94