Finding the Fourth Proportional to 78,233.49, 117,379.40 and 43,163.73

Step by Step Solution

1. Step 1: Write the proportion equation
   78,233.49 : 117,379.40 = 43,163.73 : x
2. Step 2: Convert to fraction form
   78,233.49/117,379.40 = 43,163.73/x
3. Step 3: Cross multiply
   78,233.49x = 117,379.40 × 43,163.73
4. Step 4: Simplify right side
   78,233.49x = 5,066,532,513.34
5. Step 5: Solve for x
   x = 5,066,532,513.34/78,233.49
6. Step 6: Final answer
   x = 64,761.68