Finding the Fourth Proportional to 58,538.45, 80,783.16 and 31,680.98

Step by Step Solution

1. Step 1: Write the proportion equation
   58,538.45 : 80,783.16 = 31,680.98 : x
2. Step 2: Convert to fraction form
   58,538.45/80,783.16 = 31,680.98/x
3. Step 3: Cross multiply
   58,538.45x = 80,783.16 × 31,680.98
4. Step 4: Simplify right side
   58,538.45x = 2,559,289,676.30
5. Step 5: Solve for x
   x = 2,559,289,676.30/58,538.45
6. Step 6: Final answer
   x = 43,719.81