Finding the Fourth Proportional to 117,709.98, 162,443.79 and 66,722.10

Step by Step Solution

1. Step 1: Write the proportion equation
   117,709.98 : 162,443.79 = 66,722.10 : x
2. Step 2: Convert to fraction form
   117,709.98/162,443.79 = 66,722.10/x
3. Step 3: Cross multiply
   117,709.98x = 162,443.79 × 66,722.10
4. Step 4: Simplify right side
   117,709.98x = 10,838,590,800.76
5. Step 5: Solve for x
   x = 10,838,590,800.76/117,709.98
6. Step 6: Final answer
   x = 92,078.78