Finding the Fourth Proportional to 123,237, 170,066.34 and 66,648.20

Step by Step Solution

1. Step 1: Write the proportion equation
   123,237 : 170,066.34 = 66,648.20 : x
2. Step 2: Convert to fraction form
   123,237/170,066.34 = 66,648.20/x
3. Step 3: Cross multiply
   123,237x = 170,066.34 × 66,648.20
4. Step 4: Simplify right side
   123,237x = 11,334,615,441.59
5. Step 5: Solve for x
   x = 11,334,615,441.59/123,237
6. Step 6: Final answer
   x = 91,974.13