Finding the Fourth Proportional to 139,682.48, 209,527.56 and 51,002.06

Step by Step Solution

1. Step 1: Write the proportion equation
   139,682.48 : 209,527.56 = 51,002.06 : x
2. Step 2: Convert to fraction form
   139,682.48/209,527.56 = 51,002.06/x
3. Step 3: Cross multiply
   139,682.48x = 209,527.56 × 51,002.06
4. Step 4: Simplify right side
   139,682.48x = 10,686,336,139.14
5. Step 5: Solve for x
   x = 10,686,336,139.14/139,682.48
6. Step 6: Final answer
   x = 76,504.49