Finding the Fourth Proportional to 123,330, 170,196.63 and 66,742.59

Step by Step Solution

1. Step 1: Write the proportion equation
   123,330 : 170,196.63 = 66,742.59 : x
2. Step 2: Convert to fraction form
   123,330/170,196.63 = 66,742.59/x
3. Step 3: Cross multiply
   123,330x = 170,196.63 × 66,742.59
4. Step 4: Simplify right side
   123,330x = 11,359,363,895.47
5. Step 5: Solve for x
   x = 11,359,363,895.47/123,330
6. Step 6: Final answer
   x = 92,105.44