Finding the Fourth Proportional to 78,869, 118,245.18 and 47,697.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,869 : 118,245.18 = 47,697.32 : x
2. Step 2: Convert to fraction form
   78,869/118,245.18 = 47,697.32/x
3. Step 3: Cross multiply
   78,869x = 118,245.18 × 47,697.32
4. Step 4: Simplify right side
   78,869x = 5,639,978,188.92
5. Step 5: Solve for x
   x = 5,639,978,188.92/78,869
6. Step 6: Final answer
   x = 71,510.71