Finding the Fourth Proportional to 140,845, 194,366.28 and 77,185.12

Step by Step Solution

1. Step 1: Write the proportion equation
   140,845 : 194,366.28 = 77,185.12 : x
2. Step 2: Convert to fraction form
   140,845/194,366.28 = 77,185.12/x
3. Step 3: Cross multiply
   140,845x = 194,366.28 × 77,185.12
4. Step 4: Simplify right side
   140,845x = 15,002,184,645.75
5. Step 5: Solve for x
   x = 15,002,184,645.75/140,845
6. Step 6: Final answer
   x = 106,515.56