Finding the Fourth Proportional to 139,201.68, 208,800.72 and 34,021.56

Step by Step Solution

1. Step 1: Write the proportion equation
   139,201.68 : 208,800.72 = 34,021.56 : x
2. Step 2: Convert to fraction form
   139,201.68/208,800.72 = 34,021.56/x
3. Step 3: Cross multiply
   139,201.68x = 208,800.72 × 34,021.56
4. Step 4: Simplify right side
   139,201.68x = 7,103,726,223.52
5. Step 5: Solve for x
   x = 7,103,726,223.52/139,201.68
6. Step 6: Final answer
   x = 51,031.90