Finding the Fourth Proportional to 139,293.32, 208,969.94 and 43,228.62

Step by Step Solution

1. Step 1: Write the proportion equation
   139,293.32 : 208,969.94 = 43,228.62 : x
2. Step 2: Convert to fraction form
   139,293.32/208,969.94 = 43,228.62/x
3. Step 3: Cross multiply
   139,293.32x = 208,969.94 × 43,228.62
4. Step 4: Simplify right side
   139,293.32x = 9,033,481,911.54
5. Step 5: Solve for x
   x = 9,033,481,911.54/139,293.32
6. Step 6: Final answer
   x = 64,852.23