Finding the Fourth Proportional to 312,321.83, 431,003.58 and 169,081.83

Step by Step Solution

1. Step 1: Write the proportion equation
   312,321.83 : 431,003.58 = 169,081.83 : x
2. Step 2: Convert to fraction form
   312,321.83/431,003.58 = 169,081.83/x
3. Step 3: Cross multiply
   312,321.83x = 431,003.58 × 169,081.83
4. Step 4: Simplify right side
   312,321.83x = 72,874,874,359.98
5. Step 5: Solve for x
   x = 72,874,874,359.98/312,321.83
6. Step 6: Final answer
   x = 233,332.63