Finding the Fourth Proportional to 139,826.37, 208,683.21 and 130,345.74

Step by Step Solution

1. Step 1: Write the proportion equation
   139,826.37 : 208,683.21 = 130,345.74 : x
2. Step 2: Convert to fraction form
   139,826.37/208,683.21 = 130,345.74/x
3. Step 3: Cross multiply
   139,826.37x = 208,683.21 × 130,345.74
4. Step 4: Simplify right side
   139,826.37x = 27,200,967,433.03
5. Step 5: Solve for x
   x = 27,200,967,433.03/139,826.37
6. Step 6: Final answer
   x = 194,533.89