Finding the Fourth Proportional to 142,181.96, 213,193.56 and 89,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,181.96 : 213,193.56 = 89,478.50 : x
2. Step 2: Convert to fraction form
   142,181.96/213,193.56 = 89,478.50/x
3. Step 3: Cross multiply
   142,181.96x = 213,193.56 × 89,478.50
4. Step 4: Simplify right side
   142,181.96x = 19,076,239,958.46
5. Step 5: Solve for x
   x = 19,076,239,958.46/142,181.96
6. Step 6: Final answer
   x = 134,167.79