Finding the Fourth Proportional to 118,938.40, 164,134.56 and 65,222.04

Step by Step Solution

1. Step 1: Write the proportion equation
   118,938.40 : 164,134.56 = 65,222.04 : x
2. Step 2: Convert to fraction form
   118,938.40/164,134.56 = 65,222.04/x
3. Step 3: Cross multiply
   118,938.40x = 164,134.56 × 65,222.04
4. Step 4: Simplify right side
   118,938.40x = 10,705,190,837.70
5. Step 5: Solve for x
   x = 10,705,190,837.70/118,938.40
6. Step 6: Final answer
   x = 90,006.18