Finding the Fourth Proportional to 589,499.78, 884,436.49 and 210,412.11

Step by Step Solution

1. Step 1: Write the proportion equation
   589,499.78 : 884,436.49 = 210,412.11 : x
2. Step 2: Convert to fraction form
   589,499.78/884,436.49 = 210,412.11/x
3. Step 3: Cross multiply
   589,499.78x = 884,436.49 × 210,412.11
4. Step 4: Simplify right side
   589,499.78x = 186,096,148,021.89
5. Step 5: Solve for x
   x = 186,096,148,021.89/589,499.78
6. Step 6: Final answer
   x = 315,684.85