Finding the Fourth Proportional to 142,753.98, 196,997.94 and 79,090.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,753.98 : 196,997.94 = 79,090.50 : x
2. Step 2: Convert to fraction form
   142,753.98/196,997.94 = 79,090.50/x
3. Step 3: Cross multiply
   142,753.98x = 196,997.94 × 79,090.50
4. Step 4: Simplify right side
   142,753.98x = 15,580,665,573.57
5. Step 5: Solve for x
   x = 15,580,665,573.57/142,753.98
6. Step 6: Final answer
   x = 109,143.48