Finding the Fourth Proportional to 89,962.25, 134,784.81 and 80,188.79

Step by Step Solution

1. Step 1: Write the proportion equation
   89,962.25 : 134,784.81 = 80,188.79 : x
2. Step 2: Convert to fraction form
   89,962.25/134,784.81 = 80,188.79/x
3. Step 3: Cross multiply
   89,962.25x = 134,784.81 × 80,188.79
4. Step 4: Simplify right side
   89,962.25x = 10,808,230,150.36
5. Step 5: Solve for x
   x = 10,808,230,150.36/89,962.25
6. Step 6: Final answer
   x = 120,141.85