Finding the Fourth Proportional to 142,017.48, 213,004.62 and 89,265.96

Step by Step Solution

1. Step 1: Write the proportion equation
   142,017.48 : 213,004.62 = 89,265.96 : x
2. Step 2: Convert to fraction form
   142,017.48/213,004.62 = 89,265.96/x
3. Step 3: Cross multiply
   142,017.48x = 213,004.62 × 89,265.96
4. Step 4: Simplify right side
   142,017.48x = 19,014,061,888.74
5. Step 5: Solve for x
   x = 19,014,061,888.74/142,017.48
6. Step 6: Final answer
   x = 133,885.36