Finding the Fourth Proportional to 170,978.25, 256,414.06 and 64,377.03

Step by Step Solution

1. Step 1: Write the proportion equation
   170,978.25 : 256,414.06 = 64,377.03 : x
2. Step 2: Convert to fraction form
   170,978.25/256,414.06 = 64,377.03/x
3. Step 3: Cross multiply
   170,978.25x = 256,414.06 × 64,377.03
4. Step 4: Simplify right side
   170,978.25x = 16,507,176,435.02
5. Step 5: Solve for x
   x = 16,507,176,435.02/170,978.25
6. Step 6: Final answer
   x = 96,545.48