Finding the Fourth Proportional to 139,480.46, 189,907.97 and 139,037.59

Step by Step Solution

1. Step 1: Write the proportion equation
   139,480.46 : 189,907.97 = 139,037.59 : x
2. Step 2: Convert to fraction form
   139,480.46/189,907.97 = 139,037.59/x
3. Step 3: Cross multiply
   139,480.46x = 189,907.97 × 139,037.59
4. Step 4: Simplify right side
   139,480.46x = 26,404,346,273.48
5. Step 5: Solve for x
   x = 26,404,346,273.48/139,480.46
6. Step 6: Final answer
   x = 189,304.99