Finding the Fourth Proportional to 164,196.98, 246,218.94 and 85,290.02

Step by Step Solution

1. Step 1: Write the proportion equation
   164,196.98 : 246,218.94 = 85,290.02 : x
2. Step 2: Convert to fraction form
   164,196.98/246,218.94 = 85,290.02/x
3. Step 3: Cross multiply
   164,196.98x = 246,218.94 × 85,290.02
4. Step 4: Simplify right side
   164,196.98x = 21,000,017,085.88
5. Step 5: Solve for x
   x = 21,000,017,085.88/164,196.98
6. Step 6: Final answer
   x = 127,895.27