Finding the Fourth Proportional to 258,429.02, 387,662.01 and 68,888.42

Step by Step Solution

1. Step 1: Write the proportion equation
   258,429.02 : 387,662.01 = 68,888.42 : x
2. Step 2: Convert to fraction form
   258,429.02/387,662.01 = 68,888.42/x
3. Step 3: Cross multiply
   258,429.02x = 387,662.01 × 68,888.42
4. Step 4: Simplify right side
   258,429.02x = 26,705,423,362.92
5. Step 5: Solve for x
   x = 26,705,423,362.92/258,429.02
6. Step 6: Final answer
   x = 103,337.56