Finding the Fourth Proportional to 142,179.96, 213,190.56 and 89,476.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,179.96 : 213,190.56 = 89,476.50 : x
2. Step 2: Convert to fraction form
   142,179.96/213,190.56 = 89,476.50/x
3. Step 3: Cross multiply
   142,179.96x = 213,190.56 × 89,476.50
4. Step 4: Simplify right side
   142,179.96x = 19,075,545,141.84
5. Step 5: Solve for x
   x = 19,075,545,141.84/142,179.96
6. Step 6: Final answer
   x = 134,164.79