Finding the Fourth Proportional to 142,054.56, 196,069.68 and 85,455

Step by Step Solution

1. Step 1: Write the proportion equation
   142,054.56 : 196,069.68 = 85,455 : x
2. Step 2: Convert to fraction form
   142,054.56/196,069.68 = 85,455/x
3. Step 3: Cross multiply
   142,054.56x = 196,069.68 × 85,455
4. Step 4: Simplify right side
   142,054.56x = 16,755,134,504.40
5. Step 5: Solve for x
   x = 16,755,134,504.40/142,054.56
6. Step 6: Final answer
   x = 117,948.59