Finding the Fourth Proportional to 58,778.05, 81,113.46 and 31,920.34

Step by Step Solution

1. Step 1: Write the proportion equation
   58,778.05 : 81,113.46 = 31,920.34 : x
2. Step 2: Convert to fraction form
   58,778.05/81,113.46 = 31,920.34/x
3. Step 3: Cross multiply
   58,778.05x = 81,113.46 × 31,920.34
4. Step 4: Simplify right side
   58,778.05x = 2,589,169,221.78
5. Step 5: Solve for x
   x = 2,589,169,221.78/58,778.05
6. Step 6: Final answer
   x = 44,049.93