Finding the Fourth Proportional to 58,215.50, 80,337.39 and 31,719.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,215.50 : 80,337.39 = 31,719.50 : x
2. Step 2: Convert to fraction form
   58,215.50/80,337.39 = 31,719.50/x
3. Step 3: Cross multiply
   58,215.50x = 80,337.39 × 31,719.50
4. Step 4: Simplify right side
   58,215.50x = 2,548,261,842.11
5. Step 5: Solve for x
   x = 2,548,261,842.11/58,215.50
6. Step 6: Final answer
   x = 43,772.91