Finding the Fourth Proportional to 118,835.94, 163,993.60 and 65,123.07

Step by Step Solution

1. Step 1: Write the proportion equation
   118,835.94 : 163,993.60 = 65,123.07 : x
2. Step 2: Convert to fraction form
   118,835.94/163,993.60 = 65,123.07/x
3. Step 3: Cross multiply
   118,835.94x = 163,993.60 × 65,123.07
4. Step 4: Simplify right side
   118,835.94x = 10,679,766,119.56
5. Step 5: Solve for x
   x = 10,679,766,119.56/118,835.94
6. Step 6: Final answer
   x = 89,869.84