Finding the Fourth Proportional to 384,903.98, 531,158.07 and 212,817.41

Step by Step Solution

1. Step 1: Write the proportion equation
   384,903.98 : 531,158.07 = 212,817.41 : x
2. Step 2: Convert to fraction form
   384,903.98/531,158.07 = 212,817.41/x
3. Step 3: Cross multiply
   384,903.98x = 531,158.07 × 212,817.41
4. Step 4: Simplify right side
   384,903.98x = 113,039,686,085.89
5. Step 5: Solve for x
   x = 113,039,686,085.89/384,903.98
6. Step 6: Final answer
   x = 293,682.82