Finding the Fourth Proportional to 140,636.94, 210,971.76 and 49,424.30

Step by Step Solution

1. Step 1: Write the proportion equation
   140,636.94 : 210,971.76 = 49,424.30 : x
2. Step 2: Convert to fraction form
   140,636.94/210,971.76 = 49,424.30/x
3. Step 3: Cross multiply
   140,636.94x = 210,971.76 × 49,424.30
4. Step 4: Simplify right side
   140,636.94x = 10,427,131,557.77
5. Step 5: Solve for x
   x = 10,427,131,557.77/140,636.94
6. Step 6: Final answer
   x = 74,142.20