Finding the Fourth Proportional to 123,245.75, 184,609.94 and 78,243.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,245.75 : 184,609.94 = 78,243.98 : x
2. Step 2: Convert to fraction form
   123,245.75/184,609.94 = 78,243.98/x
3. Step 3: Cross multiply
   123,245.75x = 184,609.94 × 78,243.98
4. Step 4: Simplify right side
   123,245.75x = 14,444,615,138.89
5. Step 5: Solve for x
   x = 14,444,615,138.89/123,245.75
6. Step 6: Final answer
   x = 117,201.73