Finding the Fourth Proportional to 951,418.48, 1,426,128.72 and 320,113.12

Step by Step Solution

1. Step 1: Write the proportion equation
   951,418.48 : 1,426,128.72 = 320,113.12 : x
2. Step 2: Convert to fraction form
   951,418.48/1,426,128.72 = 320,113.12/x
3. Step 3: Cross multiply
   951,418.48x = 1,426,128.72 × 320,113.12
4. Step 4: Simplify right side
   951,418.48x = 456,522,514,080.81
5. Step 5: Solve for x
   x = 456,522,514,080.81/951,418.48
6. Step 6: Final answer
   x = 479,833.56