Finding the Fourth Proportional to 123,971.42, 171,079.62 and 67,383.20

Step by Step Solution

1. Step 1: Write the proportion equation
   123,971.42 : 171,079.62 = 67,383.20 : x
2. Step 2: Convert to fraction form
   123,971.42/171,079.62 = 67,383.20/x
3. Step 3: Cross multiply
   123,971.42x = 171,079.62 × 67,383.20
4. Step 4: Simplify right side
   123,971.42x = 11,527,892,250.38
5. Step 5: Solve for x
   x = 11,527,892,250.38/123,971.42
6. Step 6: Final answer
   x = 92,988.31