Finding the Fourth Proportional to 810,105.92, 1,117,941.72 and 447,554.72

Step by Step Solution

1. Step 1: Write the proportion equation
   810,105.92 : 1,117,941.72 = 447,554.72 : x
2. Step 2: Convert to fraction form
   810,105.92/1,117,941.72 = 447,554.72/x
3. Step 3: Cross multiply
   810,105.92x = 1,117,941.72 × 447,554.72
4. Step 4: Simplify right side
   810,105.92x = 500,340,093,470.92
5. Step 5: Solve for x
   x = 500,340,093,470.92/810,105.92
6. Step 6: Final answer
   x = 617,623.06