Finding the Fourth Proportional to 117,621.72, 162,318.15 and 63,906.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,621.72 : 162,318.15 = 63,906.72 : x
2. Step 2: Convert to fraction form
   117,621.72/162,318.15 = 63,906.72/x
3. Step 3: Cross multiply
   117,621.72x = 162,318.15 × 63,906.72
4. Step 4: Simplify right side
   117,621.72x = 10,373,219,954.27
5. Step 5: Solve for x
   x = 10,373,219,954.27/117,621.72
6. Step 6: Final answer
   x = 88,191.36