Finding the Fourth Proportional to 142,754.48, 196,998.63 and 79,091

Step by Step Solution

1. Step 1: Write the proportion equation
   142,754.48 : 196,998.63 = 79,091 : x
2. Step 2: Convert to fraction form
   142,754.48/196,998.63 = 79,091/x
3. Step 3: Cross multiply
   142,754.48x = 196,998.63 × 79,091
4. Step 4: Simplify right side
   142,754.48x = 15,580,818,645.33
5. Step 5: Solve for x
   x = 15,580,818,645.33/142,754.48
6. Step 6: Final answer
   x = 109,144.17