Finding the Fourth Proportional to 258,300.33, 387,479.52 and 68,768.10

Step by Step Solution

1. Step 1: Write the proportion equation
   258,300.33 : 387,479.52 = 68,768.10 : x
2. Step 2: Convert to fraction form
   258,300.33/387,479.52 = 68,768.10/x
3. Step 3: Cross multiply
   258,300.33x = 387,479.52 × 68,768.10
4. Step 4: Simplify right side
   258,300.33x = 26,646,230,379.31
5. Step 5: Solve for x
   x = 26,646,230,379.31/258,300.33
6. Step 6: Final answer
   x = 103,159.88