Finding the Fourth Proportional to 139,004.98, 206,719.22 and 134,576.30

Step by Step Solution

1. Step 1: Write the proportion equation
   139,004.98 : 206,719.22 = 134,576.30 : x
2. Step 2: Convert to fraction form
   139,004.98/206,719.22 = 134,576.30/x
3. Step 3: Cross multiply
   139,004.98x = 206,719.22 × 134,576.30
4. Step 4: Simplify right side
   139,004.98x = 27,819,508,619.72
5. Step 5: Solve for x
   x = 27,819,508,619.72/139,004.98
6. Step 6: Final answer
   x = 200,133.18