Finding the Fourth Proportional to 144,900.72, 217,327.72 and 39,695.12

Step by Step Solution

1. Step 1: Write the proportion equation
   144,900.72 : 217,327.72 = 39,695.12 : x
2. Step 2: Convert to fraction form
   144,900.72/217,327.72 = 39,695.12/x
3. Step 3: Cross multiply
   144,900.72x = 217,327.72 × 39,695.12
4. Step 4: Simplify right side
   144,900.72x = 8,626,849,924.73
5. Step 5: Solve for x
   x = 8,626,849,924.73/144,900.72
6. Step 6: Final answer
   x = 59,536.28