Finding the Fourth Proportional to 117,709.15, 162,441.83 and 63,997.78

Step by Step Solution

1. Step 1: Write the proportion equation
   117,709.15 : 162,441.83 = 63,997.78 : x
2. Step 2: Convert to fraction form
   117,709.15/162,441.83 = 63,997.78/x
3. Step 3: Cross multiply
   117,709.15x = 162,441.83 × 63,997.78
4. Step 4: Simplify right side
   117,709.15x = 10,395,915,366.94
5. Step 5: Solve for x
   x = 10,395,915,366.94/117,709.15
6. Step 6: Final answer
   x = 88,318.67