Finding the Fourth Proportional to 49,992.08, 69,002.76 and 31,118

Step by Step Solution

1. Step 1: Write the proportion equation
   49,992.08 : 69,002.76 = 31,118 : x
2. Step 2: Convert to fraction form
   49,992.08/69,002.76 = 31,118/x
3. Step 3: Cross multiply
   49,992.08x = 69,002.76 × 31,118
4. Step 4: Simplify right side
   49,992.08x = 2,147,227,885.68
5. Step 5: Solve for x
   x = 2,147,227,885.68/49,992.08
6. Step 6: Final answer
   x = 42,951.36