Finding the Fourth Proportional to 288,725.67, 433,162.31 and 120,189.96

Step by Step Solution

1. Step 1: Write the proportion equation
   288,725.67 : 433,162.31 = 120,189.96 : x
2. Step 2: Convert to fraction form
   288,725.67/433,162.31 = 120,189.96/x
3. Step 3: Cross multiply
   288,725.67x = 433,162.31 × 120,189.96
4. Step 4: Simplify right side
   288,725.67x = 52,061,760,111.46
5. Step 5: Solve for x
   x = 52,061,760,111.46/288,725.67
6. Step 6: Final answer
   x = 180,315.66