Finding the Fourth Proportional to 384,548.91, 530,683.05 and 212,470.83

Step by Step Solution

1. Step 1: Write the proportion equation
   384,548.91 : 530,683.05 = 212,470.83 : x
2. Step 2: Convert to fraction form
   384,548.91/530,683.05 = 212,470.83/x
3. Step 3: Cross multiply
   384,548.91x = 530,683.05 × 212,470.83
4. Step 4: Simplify right side
   384,548.91x = 112,754,668,100.43
5. Step 5: Solve for x
   x = 112,754,668,100.43/384,548.91
6. Step 6: Final answer
   x = 293,212.82