Finding the Fourth Proportional to 142,754.98, 196,999.32 and 79,091.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,754.98 : 196,999.32 = 79,091.50 : x
2. Step 2: Convert to fraction form
   142,754.98/196,999.32 = 79,091.50/x
3. Step 3: Cross multiply
   142,754.98x = 196,999.32 × 79,091.50
4. Step 4: Simplify right side
   142,754.98x = 15,580,971,717.78
5. Step 5: Solve for x
   x = 15,580,971,717.78/142,754.98
6. Step 6: Final answer
   x = 109,144.86