Finding the Fourth Proportional to 586,923.76, 810,147.72 and 345,196

Step by Step Solution

1. Step 1: Write the proportion equation
   586,923.76 : 810,147.72 = 345,196 : x
2. Step 2: Convert to fraction form
   586,923.76/810,147.72 = 345,196/x
3. Step 3: Cross multiply
   586,923.76x = 810,147.72 × 345,196
4. Step 4: Simplify right side
   586,923.76x = 279,659,752,353.12
5. Step 5: Solve for x
   x = 279,659,752,353.12/586,923.76
6. Step 6: Final answer
   x = 476,483.95