Finding the Fourth Proportional to 142,185.96, 213,199.56 and 89,482.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,185.96 : 213,199.56 = 89,482.50 : x
2. Step 2: Convert to fraction form
   142,185.96/213,199.56 = 89,482.50/x
3. Step 3: Cross multiply
   142,185.96x = 213,199.56 × 89,482.50
4. Step 4: Simplify right side
   142,185.96x = 19,077,629,627.70
5. Step 5: Solve for x
   x = 19,077,629,627.70/142,185.96
6. Step 6: Final answer
   x = 134,173.79