Finding the Fourth Proportional to 646,016.95, 891,494.50 and 359,536.99

Step by Step Solution

1. Step 1: Write the proportion equation
   646,016.95 : 891,494.50 = 359,536.99 : x
2. Step 2: Convert to fraction form
   646,016.95/891,494.50 = 359,536.99/x
3. Step 3: Cross multiply
   646,016.95x = 891,494.50 × 359,536.99
4. Step 4: Simplify right side
   646,016.95x = 320,525,249,131.56
5. Step 5: Solve for x
   x = 320,525,249,131.56/646,016.95
6. Step 6: Final answer
   x = 496,156.10