Finding the Fourth Proportional to 137,275, 189,442.70 and 76,844.12

Step by Step Solution

1. Step 1: Write the proportion equation
   137,275 : 189,442.70 = 76,844.12 : x
2. Step 2: Convert to fraction form
   137,275/189,442.70 = 76,844.12/x
3. Step 3: Cross multiply
   137,275x = 189,442.70 × 76,844.12
4. Step 4: Simplify right side
   137,275x = 14,557,557,571.92
5. Step 5: Solve for x
   x = 14,557,557,571.92/137,275
6. Step 6: Final answer
   x = 106,046.68