Finding the Fourth Proportional to 631,847.50, 947,771.38 and 211,123.42

Step by Step Solution

1. Step 1: Write the proportion equation
   631,847.50 : 947,771.38 = 211,123.42 : x
2. Step 2: Convert to fraction form
   631,847.50/947,771.38 = 211,123.42/x
3. Step 3: Cross multiply
   631,847.50x = 947,771.38 × 211,123.42
4. Step 4: Simplify right side
   631,847.50x = 200,096,735,123.72
5. Step 5: Solve for x
   x = 200,096,735,123.72/631,847.50
6. Step 6: Final answer
   x = 316,685.17