Finding the Fourth Proportional to 123,290.72, 170,131.80 and 69,580.73

Step by Step Solution

1. Step 1: Write the proportion equation
   123,290.72 : 170,131.80 = 69,580.73 : x
2. Step 2: Convert to fraction form
   123,290.72/170,131.80 = 69,580.73/x
3. Step 3: Cross multiply
   123,290.72x = 170,131.80 × 69,580.73
4. Step 4: Simplify right side
   123,290.72x = 11,837,894,840.21
5. Step 5: Solve for x
   x = 11,837,894,840.21/123,290.72
6. Step 6: Final answer
   x = 96,016.11