Finding the Fourth Proportional to 56,870.97, 78,481.39 and 31,377.54

Step by Step Solution

1. Step 1: Write the proportion equation
   56,870.97 : 78,481.39 = 31,377.54 : x
2. Step 2: Convert to fraction form
   56,870.97/78,481.39 = 31,377.54/x
3. Step 3: Cross multiply
   56,870.97x = 78,481.39 × 31,377.54
4. Step 4: Simplify right side
   56,870.97x = 2,462,552,404.69
5. Step 5: Solve for x
   x = 2,462,552,404.69/56,870.97
6. Step 6: Final answer
   x = 43,300.70