Finding the Fourth Proportional to 118,978.94, 164,193.12 and 65,266.70

Step by Step Solution

1. Step 1: Write the proportion equation
   118,978.94 : 164,193.12 = 65,266.70 : x
2. Step 2: Convert to fraction form
   118,978.94/164,193.12 = 65,266.70/x
3. Step 3: Cross multiply
   118,978.94x = 164,193.12 × 65,266.70
4. Step 4: Simplify right side
   118,978.94x = 10,716,343,105.10
5. Step 5: Solve for x
   x = 10,716,343,105.10/118,978.94
6. Step 6: Final answer
   x = 90,069.24