Finding the Fourth Proportional to 142,753.48, 196,997.25 and 79,090

Step by Step Solution

1. Step 1: Write the proportion equation
   142,753.48 : 196,997.25 = 79,090 : x
2. Step 2: Convert to fraction form
   142,753.48/196,997.25 = 79,090/x
3. Step 3: Cross multiply
   142,753.48x = 196,997.25 × 79,090
4. Step 4: Simplify right side
   142,753.48x = 15,580,512,502.50
5. Step 5: Solve for x
   x = 15,580,512,502.50/142,753.48
6. Step 6: Final answer
   x = 109,142.79