Finding the Fourth Proportional to 142,510.79, 196,628.00 and 85,126.64

Step by Step Solution

1. Step 1: Write the proportion equation
   142,510.79 : 196,628.00 = 85,126.64 : x
2. Step 2: Convert to fraction form
   142,510.79/196,628.00 = 85,126.64/x
3. Step 3: Cross multiply
   142,510.79x = 196,628.00 × 85,126.64
4. Step 4: Simplify right side
   142,510.79x = 16,738,279,561.15
5. Step 5: Solve for x
   x = 16,738,279,561.15/142,510.79
6. Step 6: Final answer
   x = 117,452.72