Finding the Fourth Proportional to 646,013.75, 891,498.98 and 359,601.50

Step by Step Solution

1. Step 1: Write the proportion equation
   646,013.75 : 891,498.98 = 359,601.50 : x
2. Step 2: Convert to fraction form
   646,013.75/891,498.98 = 359,601.50/x
3. Step 3: Cross multiply
   646,013.75x = 891,498.98 × 359,601.50
4. Step 4: Simplify right side
   646,013.75x = 320,584,364,200.97
5. Step 5: Solve for x
   x = 320,584,364,200.97/646,013.75
6. Step 6: Final answer
   x = 496,250.06