Finding the Fourth Proportional to 123,383.98, 185,149.70 and 113,345.65

Step by Step Solution

1. Step 1: Write the proportion equation
   123,383.98 : 185,149.70 = 113,345.65 : x
2. Step 2: Convert to fraction form
   123,383.98/185,149.70 = 113,345.65/x
3. Step 3: Cross multiply
   123,383.98x = 185,149.70 × 113,345.65
4. Step 4: Simplify right side
   123,383.98x = 20,985,912,914.29
5. Step 5: Solve for x
   x = 20,985,912,914.29/123,383.98
6. Step 6: Final answer
   x = 170,086.21