Finding the Fourth Proportional to 384,144.54, 530,105.57 and 212,058.81

Step by Step Solution

1. Step 1: Write the proportion equation
   384,144.54 : 530,105.57 = 212,058.81 : x
2. Step 2: Convert to fraction form
   384,144.54/530,105.57 = 212,058.81/x
3. Step 3: Cross multiply
   384,144.54x = 530,105.57 × 212,058.81
4. Step 4: Simplify right side
   384,144.54x = 112,413,556,348.57
5. Step 5: Solve for x
   x = 112,413,556,348.57/384,144.54
6. Step 6: Final answer
   x = 292,633.49