Finding the Fourth Proportional to 118,129, 163,018.02 and 65,137

Step by Step Solution

1. Step 1: Write the proportion equation
   118,129 : 163,018.02 = 65,137 : x
2. Step 2: Convert to fraction form
   118,129/163,018.02 = 65,137/x
3. Step 3: Cross multiply
   118,129x = 163,018.02 × 65,137
4. Step 4: Simplify right side
   118,129x = 10,618,504,768.74
5. Step 5: Solve for x
   x = 10,618,504,768.74/118,129
6. Step 6: Final answer
   x = 89,889.06