Finding the Fourth Proportional to 105,978.83, 158,992.87 and 31,095.95

Step by Step Solution

1. Step 1: Write the proportion equation
   105,978.83 : 158,992.87 = 31,095.95 : x
2. Step 2: Convert to fraction form
   105,978.83/158,992.87 = 31,095.95/x
3. Step 3: Cross multiply
   105,978.83x = 158,992.87 × 31,095.95
4. Step 4: Simplify right side
   105,978.83x = 4,944,034,335.88
5. Step 5: Solve for x
   x = 4,944,034,335.88/105,978.83
6. Step 6: Final answer
   x = 46,651.15