Finding the Fourth Proportional to 55,664.76, 76,815.78 and 31,790.94

Step by Step Solution

1. Step 1: Write the proportion equation
   55,664.76 : 76,815.78 = 31,790.94 : x
2. Step 2: Convert to fraction form
   55,664.76/76,815.78 = 31,790.94/x
3. Step 3: Cross multiply
   55,664.76x = 76,815.78 × 31,790.94
4. Step 4: Simplify right side
   55,664.76x = 2,442,045,853.03
5. Step 5: Solve for x
   x = 2,442,045,853.03/55,664.76
6. Step 6: Final answer
   x = 43,870.59