Finding the Fourth Proportional to 257,783.44, 386,582.89 and 89,258.52

Step by Step Solution

1. Step 1: Write the proportion equation
   257,783.44 : 386,582.89 = 89,258.52 : x
2. Step 2: Convert to fraction form
   257,783.44/386,582.89 = 89,258.52/x
3. Step 3: Cross multiply
   257,783.44x = 386,582.89 × 89,258.52
4. Step 4: Simplify right side
   257,783.44x = 34,505,814,499.79
5. Step 5: Solve for x
   x = 34,505,814,499.79/257,783.44
6. Step 6: Final answer
   x = 133,855.82