Finding the Fourth Proportional to 55,084.38, 76,019.50 and 31,218.74

Step by Step Solution

1. Step 1: Write the proportion equation
   55,084.38 : 76,019.50 = 31,218.74 : x
2. Step 2: Convert to fraction form
   55,084.38/76,019.50 = 31,218.74/x
3. Step 3: Cross multiply
   55,084.38x = 76,019.50 × 31,218.74
4. Step 4: Simplify right side
   55,084.38x = 2,373,233,005.43
5. Step 5: Solve for x
   x = 2,373,233,005.43/55,084.38
6. Step 6: Final answer
   x = 43,083.59