Finding the Fourth Proportional to 123,189.94, 170,002.32 and 66,601.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,189.94 : 170,002.32 = 66,601.31 : x
2. Step 2: Convert to fraction form
   123,189.94/170,002.32 = 66,601.31/x
3. Step 3: Cross multiply
   123,189.94x = 170,002.32 × 66,601.31
4. Step 4: Simplify right side
   123,189.94x = 11,322,377,215.04
5. Step 5: Solve for x
   x = 11,322,377,215.04/123,189.94
6. Step 6: Final answer
   x = 91,909.92