Finding the Fourth Proportional to 123,058.42, 169,820.71 and 66,469.79

Step by Step Solution

1. Step 1: Write the proportion equation
   123,058.42 : 169,820.71 = 66,469.79 : x
2. Step 2: Convert to fraction form
   123,058.42/169,820.71 = 66,469.79/x
3. Step 3: Cross multiply
   123,058.42x = 169,820.71 × 66,469.79
4. Step 4: Simplify right side
   123,058.42x = 11,287,947,189.73
5. Step 5: Solve for x
   x = 11,287,947,189.73/123,058.42
6. Step 6: Final answer
   x = 91,728.36