Finding the Fourth Proportional to 257,787.35, 386,223.50 and 107,697.32

Step by Step Solution

1. Step 1: Write the proportion equation
   257,787.35 : 386,223.50 = 107,697.32 : x
2. Step 2: Convert to fraction form
   257,787.35/386,223.50 = 107,697.32/x
3. Step 3: Cross multiply
   257,787.35x = 386,223.50 × 107,697.32
4. Step 4: Simplify right side
   257,787.35x = 41,595,233,401.42
5. Step 5: Solve for x
   x = 41,595,233,401.42/257,787.35
6. Step 6: Final answer
   x = 161,354.83