Finding the Fourth Proportional to 142,126.46, 213,301.05 and 99,152.42

Step by Step Solution

1. Step 1: Write the proportion equation
   142,126.46 : 213,301.05 = 99,152.42 : x
2. Step 2: Convert to fraction form
   142,126.46/213,301.05 = 99,152.42/x
3. Step 3: Cross multiply
   142,126.46x = 213,301.05 × 99,152.42
4. Step 4: Simplify right side
   142,126.46x = 21,149,314,229.54
5. Step 5: Solve for x
   x = 21,149,314,229.54/142,126.46
6. Step 6: Final answer
   x = 148,806.32