Finding the Fourth Proportional to 78,764.35, 118,071.82 and 31,408.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,764.35 : 118,071.82 = 31,408.54 : x
2. Step 2: Convert to fraction form
   78,764.35/118,071.82 = 31,408.54/x
3. Step 3: Cross multiply
   78,764.35x = 118,071.82 × 31,408.54
4. Step 4: Simplify right side
   78,764.35x = 3,708,463,481.34
5. Step 5: Solve for x
   x = 3,708,463,481.34/78,764.35
6. Step 6: Final answer
   x = 47,083.02