Finding the Fourth Proportional to 78,718.50, 118,019.42 and 47,546.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,718.50 : 118,019.42 = 47,546.46 : x
2. Step 2: Convert to fraction form
   78,718.50/118,019.42 = 47,546.46/x
3. Step 3: Cross multiply
   78,718.50x = 118,019.42 × 47,546.46
4. Step 4: Simplify right side
   78,718.50x = 5,611,405,632.25
5. Step 5: Solve for x
   x = 5,611,405,632.25/78,718.50
6. Step 6: Final answer
   x = 71,284.46