Finding the Fourth Proportional to 111,566.60, 167,004.30 and 64,680.20

Step by Step Solution

1. Step 1: Write the proportion equation
   111,566.60 : 167,004.30 = 64,680.20 : x
2. Step 2: Convert to fraction form
   111,566.60/167,004.30 = 64,680.20/x
3. Step 3: Cross multiply
   111,566.60x = 167,004.30 × 64,680.20
4. Step 4: Simplify right side
   111,566.60x = 10,801,871,524.86
5. Step 5: Solve for x
   x = 10,801,871,524.86/111,566.60
6. Step 6: Final answer
   x = 96,819.94