Finding the Fourth Proportional to 256,368.86, 353,796.16 and 141,654.89

Step by Step Solution

1. Step 1: Write the proportion equation
   256,368.86 : 353,796.16 = 141,654.89 : x
2. Step 2: Convert to fraction form
   256,368.86/353,796.16 = 141,654.89/x
3. Step 3: Cross multiply
   256,368.86x = 353,796.16 × 141,654.89
4. Step 4: Simplify right side
   256,368.86x = 50,116,955,418.95
5. Step 5: Solve for x
   x = 50,116,955,418.95/256,368.86
6. Step 6: Final answer
   x = 195,487.69