Finding the Fourth Proportional to 85,778.70, 118,373.18 and 47,016.15

Step by Step Solution

1. Step 1: Write the proportion equation
   85,778.70 : 118,373.18 = 47,016.15 : x
2. Step 2: Convert to fraction form
   85,778.70/118,373.18 = 47,016.15/x
3. Step 3: Cross multiply
   85,778.70x = 118,373.18 × 47,016.15
4. Step 4: Simplify right side
   85,778.70x = 5,565,450,951.78
5. Step 5: Solve for x
   x = 5,565,450,951.78/85,778.70
6. Step 6: Final answer
   x = 64,881.50