Finding the Fourth Proportional to 140,039.72, 210,058.50 and 34,857.98

Step by Step Solution

1. Step 1: Write the proportion equation
   140,039.72 : 210,058.50 = 34,857.98 : x
2. Step 2: Convert to fraction form
   140,039.72/210,058.50 = 34,857.98/x
3. Step 3: Cross multiply
   140,039.72x = 210,058.50 × 34,857.98
4. Step 4: Simplify right side
   140,039.72x = 7,322,214,991.83
5. Step 5: Solve for x
   x = 7,322,214,991.83/140,039.72
6. Step 6: Final answer
   x = 52,286.70