Finding the Fourth Proportional to 648,947.38, 973,455.72 and 199,976.62

Step by Step Solution

1. Step 1: Write the proportion equation
   648,947.38 : 973,455.72 = 199,976.62 : x
2. Step 2: Convert to fraction form
   648,947.38/973,455.72 = 199,976.62/x
3. Step 3: Cross multiply
   648,947.38x = 973,455.72 × 199,976.62
4. Step 4: Simplify right side
   648,947.38x = 194,668,384,605.27
5. Step 5: Solve for x
   x = 194,668,384,605.27/648,947.38
6. Step 6: Final answer
   x = 299,975.61