Finding the Fourth Proportional to 123,771.84, 170,808.72 and 67,186.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,771.84 : 170,808.72 = 67,186.80 : x
2. Step 2: Convert to fraction form
   123,771.84/170,808.72 = 67,186.80/x
3. Step 3: Cross multiply
   123,771.84x = 170,808.72 × 67,186.80
4. Step 4: Simplify right side
   123,771.84x = 11,476,091,308.90
5. Step 5: Solve for x
   x = 11,476,091,308.90/123,771.84
6. Step 6: Final answer
   x = 92,719.73