Finding the Fourth Proportional to 297,429.27, 410,300.34 and 189,886.28

Step by Step Solution

1. Step 1: Write the proportion equation
   297,429.27 : 410,300.34 = 189,886.28 : x
2. Step 2: Convert to fraction form
   297,429.27/410,300.34 = 189,886.28/x
3. Step 3: Cross multiply
   297,429.27x = 410,300.34 × 189,886.28
4. Step 4: Simplify right side
   297,429.27x = 77,910,402,481.76
5. Step 5: Solve for x
   x = 77,910,402,481.76/297,429.27
6. Step 6: Final answer
   x = 261,945.99