Finding the Fourth Proportional to 143,105.20, 214,659.72 and 43,266.16

Step by Step Solution

1. Step 1: Write the proportion equation
   143,105.20 : 214,659.72 = 43,266.16 : x
2. Step 2: Convert to fraction form
   143,105.20/214,659.72 = 43,266.16/x
3. Step 3: Cross multiply
   143,105.20x = 214,659.72 × 43,266.16
4. Step 4: Simplify right side
   143,105.20x = 9,287,501,791.08
5. Step 5: Solve for x
   x = 9,287,501,791.08/143,105.20
6. Step 6: Final answer
   x = 64,899.82