Finding the Fourth Proportional to 140,558.32, 194,033.82 and 89,639.38

Step by Step Solution

1. Step 1: Write the proportion equation
   140,558.32 : 194,033.82 = 89,639.38 : x
2. Step 2: Convert to fraction form
   140,558.32/194,033.82 = 89,639.38/x
3. Step 3: Cross multiply
   140,558.32x = 194,033.82 × 89,639.38
4. Step 4: Simplify right side
   140,558.32x = 17,393,071,323.83
5. Step 5: Solve for x
   x = 17,393,071,323.83/140,558.32
6. Step 6: Final answer
   x = 123,742.74