Finding the Fourth Proportional to 659,404.50, 909,978.75 and 357,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   659,404.50 : 909,978.75 = 357,598.50 : x
2. Step 2: Convert to fraction form
   659,404.50/909,978.75 = 357,598.50/x
3. Step 3: Cross multiply
   659,404.50x = 909,978.75 × 357,598.50
4. Step 4: Simplify right side
   659,404.50x = 325,407,036,031.88
5. Step 5: Solve for x
   x = 325,407,036,031.88/659,404.50
6. Step 6: Final answer
   x = 493,486.22