Finding the Fourth Proportional to 50,820.47, 70,166.48 and 31,729.31

Step by Step Solution

1. Step 1: Write the proportion equation
   50,820.47 : 70,166.48 = 31,729.31 : x
2. Step 2: Convert to fraction form
   50,820.47/70,166.48 = 31,729.31/x
3. Step 3: Cross multiply
   50,820.47x = 70,166.48 × 31,729.31
4. Step 4: Simplify right side
   50,820.47x = 2,226,333,486.05
5. Step 5: Solve for x
   x = 2,226,333,486.05/50,820.47
6. Step 6: Final answer
   x = 43,807.81