Finding the Fourth Proportional to 659,404.72, 989,096.32 and 210,119.52

Step by Step Solution

1. Step 1: Write the proportion equation
   659,404.72 : 989,096.32 = 210,119.52 : x
2. Step 2: Convert to fraction form
   659,404.72/989,096.32 = 210,119.52/x
3. Step 3: Cross multiply
   659,404.72x = 989,096.32 × 210,119.52
4. Step 4: Simplify right side
   659,404.72x = 207,828,443,992.17
5. Step 5: Solve for x
   x = 207,828,443,992.17/659,404.72
6. Step 6: Final answer
   x = 315,175.85