Finding the Fourth Proportional to 102,778.72, 154,184.71 and 31,684.73

Step by Step Solution

1. Step 1: Write the proportion equation
   102,778.72 : 154,184.71 = 31,684.73 : x
2. Step 2: Convert to fraction form
   102,778.72/154,184.71 = 31,684.73/x
3. Step 3: Cross multiply
   102,778.72x = 154,184.71 × 31,684.73
4. Step 4: Simplify right side
   102,778.72x = 4,885,300,906.48
5. Step 5: Solve for x
   x = 4,885,300,906.48/102,778.72
6. Step 6: Final answer
   x = 47,532.22