Finding the Fourth Proportional to 142,338.25, 196,426.79 and 85,761.37

Step by Step Solution

1. Step 1: Write the proportion equation
   142,338.25 : 196,426.79 = 85,761.37 : x
2. Step 2: Convert to fraction form
   142,338.25/196,426.79 = 85,761.37/x
3. Step 3: Cross multiply
   142,338.25x = 196,426.79 × 85,761.37
4. Step 4: Simplify right side
   142,338.25x = 16,845,830,615.10
5. Step 5: Solve for x
   x = 16,845,830,615.10/142,338.25
6. Step 6: Final answer
   x = 118,350.69