Finding the Fourth Proportional to 329,864.72, 455,215.28 and 186,654.69

Step by Step Solution

1. Step 1: Write the proportion equation
   329,864.72 : 455,215.28 = 186,654.69 : x
2. Step 2: Convert to fraction form
   329,864.72/455,215.28 = 186,654.69/x
3. Step 3: Cross multiply
   329,864.72x = 455,215.28 × 186,654.69
4. Step 4: Simplify right side
   329,864.72x = 84,968,066,038.39
5. Step 5: Solve for x
   x = 84,968,066,038.39/329,864.72
6. Step 6: Final answer
   x = 257,584.59