Finding the Fourth Proportional to 102,960.27, 154,493.37 and 77,992.02

Step by Step Solution

1. Step 1: Write the proportion equation
   102,960.27 : 154,493.37 = 77,992.02 : x
2. Step 2: Convert to fraction form
   102,960.27/154,493.37 = 77,992.02/x
3. Step 3: Cross multiply
   102,960.27x = 154,493.37 × 77,992.02
4. Step 4: Simplify right side
   102,960.27x = 12,049,250,002.91
5. Step 5: Solve for x
   x = 12,049,250,002.91/102,960.27
6. Step 6: Final answer
   x = 117,028.15