Finding the Fourth Proportional to 118,800.72, 163,944.90 and 65,089.08

Step by Step Solution

1. Step 1: Write the proportion equation
   118,800.72 : 163,944.90 = 65,089.08 : x
2. Step 2: Convert to fraction form
   118,800.72/163,944.90 = 65,089.08/x
3. Step 3: Cross multiply
   118,800.72x = 163,944.90 × 65,089.08
4. Step 4: Simplify right side
   118,800.72x = 10,671,022,711.69
5. Step 5: Solve for x
   x = 10,671,022,711.69/118,800.72
6. Step 6: Final answer
   x = 89,822.88