Finding the Fourth Proportional to 70,178.10, 96,851.30 and 39,964.69

Step by Step Solution

1. Step 1: Write the proportion equation
   70,178.10 : 96,851.30 = 39,964.69 : x
2. Step 2: Convert to fraction form
   70,178.10/96,851.30 = 39,964.69/x
3. Step 3: Cross multiply
   70,178.10x = 96,851.30 × 39,964.69
4. Step 4: Simplify right side
   70,178.10x = 3,870,632,101.84
5. Step 5: Solve for x
   x = 3,870,632,101.84/70,178.10
6. Step 6: Final answer
   x = 55,154.42