Finding the Fourth Proportional to 384,433.50, 530,516.12 and 212,363.30

Step by Step Solution

1. Step 1: Write the proportion equation
   384,433.50 : 530,516.12 = 212,363.30 : x
2. Step 2: Convert to fraction form
   384,433.50/530,516.12 = 212,363.30/x
3. Step 3: Cross multiply
   384,433.50x = 530,516.12 × 212,363.30
4. Step 4: Simplify right side
   384,433.50x = 112,662,152,221.43
5. Step 5: Solve for x
   x = 112,662,152,221.43/384,433.50
6. Step 6: Final answer
   x = 293,060.19