Finding the Fourth Proportional to 256,054.72, 353,521.98 and 229,151

Step by Step Solution

1. Step 1: Write the proportion equation
   256,054.72 : 353,521.98 = 229,151 : x
2. Step 2: Convert to fraction form
   256,054.72/353,521.98 = 229,151/x
3. Step 3: Cross multiply
   256,054.72x = 353,521.98 × 229,151
4. Step 4: Simplify right side
   256,054.72x = 81,009,915,238.98
5. Step 5: Solve for x
   x = 81,009,915,238.98/256,054.72
6. Step 6: Final answer
   x = 316,377.36