Finding the Fourth Proportional to 170,300.40, 255,441.96 and 65,111.28

Step by Step Solution

1. Step 1: Write the proportion equation
   170,300.40 : 255,441.96 = 65,111.28 : x
2. Step 2: Convert to fraction form
   170,300.40/255,441.96 = 65,111.28/x
3. Step 3: Cross multiply
   170,300.40x = 255,441.96 × 65,111.28
4. Step 4: Simplify right side
   170,300.40x = 16,632,152,981.31
5. Step 5: Solve for x
   x = 16,632,152,981.31/170,300.40
6. Step 6: Final answer
   x = 97,663.62