Finding the Fourth Proportional to 142,036.23, 196,080.96 and 88,338.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,036.23 : 196,080.96 = 88,338.56 : x
2. Step 2: Convert to fraction form
   142,036.23/196,080.96 = 88,338.56/x
3. Step 3: Cross multiply
   142,036.23x = 196,080.96 × 88,338.56
4. Step 4: Simplify right side
   142,036.23x = 17,321,508,669.41
5. Step 5: Solve for x
   x = 17,321,508,669.41/142,036.23
6. Step 6: Final answer
   x = 121,951.34