Finding the Fourth Proportional to 140,298.54, 210,425.13 and 51,530.10

Step by Step Solution

1. Step 1: Write the proportion equation
   140,298.54 : 210,425.13 = 51,530.10 : x
2. Step 2: Convert to fraction form
   140,298.54/210,425.13 = 51,530.10/x
3. Step 3: Cross multiply
   140,298.54x = 210,425.13 × 51,530.10
4. Step 4: Simplify right side
   140,298.54x = 10,843,227,991.41
5. Step 5: Solve for x
   x = 10,843,227,991.41/140,298.54
6. Step 6: Final answer
   x = 77,286.82