Finding the Fourth Proportional to 312,498.20, 466,003.18 and 309,656.46

Step by Step Solution

1. Step 1: Write the proportion equation
   312,498.20 : 466,003.18 = 309,656.46 : x
2. Step 2: Convert to fraction form
   312,498.20/466,003.18 = 309,656.46/x
3. Step 3: Cross multiply
   312,498.20x = 466,003.18 × 309,656.46
4. Step 4: Simplify right side
   312,498.20x = 144,300,895,067.54
5. Step 5: Solve for x
   x = 144,300,895,067.54/312,498.20
6. Step 6: Final answer
   x = 461,765.52