Finding the Fourth Proportional to 118,979.42, 164,196.21 and 65,266.70

Step by Step Solution

1. Step 1: Write the proportion equation
   118,979.42 : 164,196.21 = 65,266.70 : x
2. Step 2: Convert to fraction form
   118,979.42/164,196.21 = 65,266.70/x
3. Step 3: Cross multiply
   118,979.42x = 164,196.21 × 65,266.70
4. Step 4: Simplify right side
   118,979.42x = 10,716,544,779.21
5. Step 5: Solve for x
   x = 10,716,544,779.21/118,979.42
6. Step 6: Final answer
   x = 90,070.58