Finding the Fourth Proportional to 257,973.98, 386,986.89 and 95,911.34

Step by Step Solution

1. Step 1: Write the proportion equation
   257,973.98 : 386,986.89 = 95,911.34 : x
2. Step 2: Convert to fraction form
   257,973.98/386,986.89 = 95,911.34/x
3. Step 3: Cross multiply
   257,973.98x = 386,986.89 × 95,911.34
4. Step 4: Simplify right side
   257,973.98x = 37,116,431,182.33
5. Step 5: Solve for x
   x = 37,116,431,182.33/257,973.98
6. Step 6: Final answer
   x = 143,876.65