Finding the Fourth Proportional to 55,348.12, 76,382.70 and 31,479

Step by Step Solution

1. Step 1: Write the proportion equation
   55,348.12 : 76,382.70 = 31,479 : x
2. Step 2: Convert to fraction form
   55,348.12/76,382.70 = 31,479/x
3. Step 3: Cross multiply
   55,348.12x = 76,382.70 × 31,479
4. Step 4: Simplify right side
   55,348.12x = 2,404,451,013.30
5. Step 5: Solve for x
   x = 2,404,451,013.30/55,348.12
6. Step 6: Final answer
   x = 43,442.32