Finding the Fourth Proportional to 140,066, 193,235.98 and 86,257.60

Step by Step Solution

1. Step 1: Write the proportion equation
   140,066 : 193,235.98 = 86,257.60 : x
2. Step 2: Convert to fraction form
   140,066/193,235.98 = 86,257.60/x
3. Step 3: Cross multiply
   140,066x = 193,235.98 × 86,257.60
4. Step 4: Simplify right side
   140,066x = 16,668,071,868.45
5. Step 5: Solve for x
   x = 16,668,071,868.45/140,066
6. Step 6: Final answer
   x = 119,001.56