Finding the Fourth Proportional to 58,788.54, 81,128.77 and 31,931.57

Step by Step Solution

1. Step 1: Write the proportion equation
   58,788.54 : 81,128.77 = 31,931.57 : x
2. Step 2: Convert to fraction form
   58,788.54/81,128.77 = 31,931.57/x
3. Step 3: Cross multiply
   58,788.54x = 81,128.77 × 31,931.57
4. Step 4: Simplify right side
   58,788.54x = 2,590,568,998.27
5. Step 5: Solve for x
   x = 2,590,568,998.27/58,788.54
6. Step 6: Final answer
   x = 44,065.88