Finding the Fourth Proportional to 744,128.32, 1,116,167.52 and 323,404.16

Step by Step Solution

1. Step 1: Write the proportion equation
   744,128.32 : 1,116,167.52 = 323,404.16 : x
2. Step 2: Convert to fraction form
   744,128.32/1,116,167.52 = 323,404.16/x
3. Step 3: Cross multiply
   744,128.32x = 1,116,167.52 × 323,404.16
4. Step 4: Simplify right side
   744,128.32x = 360,973,219,224.88
5. Step 5: Solve for x
   x = 360,973,219,224.88/744,128.32
6. Step 6: Final answer
   x = 485,095.39