Finding the Fourth Proportional to 69,441.72, 104,164.50 and 43,222.20

Step by Step Solution

1. Step 1: Write the proportion equation
   69,441.72 : 104,164.50 = 43,222.20 : x
2. Step 2: Convert to fraction form
   69,441.72/104,164.50 = 43,222.20/x
3. Step 3: Cross multiply
   69,441.72x = 104,164.50 × 43,222.20
4. Step 4: Simplify right side
   69,441.72x = 4,502,218,851.90
5. Step 5: Solve for x
   x = 4,502,218,851.90/69,441.72
6. Step 6: Final answer
   x = 64,834.50