Finding the Fourth Proportional to 85,499.98, 128,249.94 and 23,170.48

Step by Step Solution

1. Step 1: Write the proportion equation
   85,499.98 : 128,249.94 = 23,170.48 : x
2. Step 2: Convert to fraction form
   85,499.98/128,249.94 = 23,170.48/x
3. Step 3: Cross multiply
   85,499.98x = 128,249.94 × 23,170.48
4. Step 4: Simplify right side
   85,499.98x = 2,971,612,669.77
5. Step 5: Solve for x
   x = 2,971,612,669.77/85,499.98
6. Step 6: Final answer
   x = 34,755.71