Finding the Fourth Proportional to 58,216, 80,338.24 and 31,720

Step by Step Solution

1. Step 1: Write the proportion equation
   58,216 : 80,338.24 = 31,720 : x
2. Step 2: Convert to fraction form
   58,216/80,338.24 = 31,720/x
3. Step 3: Cross multiply
   58,216x = 80,338.24 × 31,720
4. Step 4: Simplify right side
   58,216x = 2,548,328,972.80
5. Step 5: Solve for x
   x = 2,548,328,972.80/58,216
6. Step 6: Final answer
   x = 43,773.69