Finding the Fourth Proportional to 89,969.34, 134,226.57 and 81,001.83

Step by Step Solution

1. Step 1: Write the proportion equation
   89,969.34 : 134,226.57 = 81,001.83 : x
2. Step 2: Convert to fraction form
   89,969.34/134,226.57 = 81,001.83/x
3. Step 3: Cross multiply
   89,969.34x = 134,226.57 × 81,001.83
4. Step 4: Simplify right side
   89,969.34x = 10,872,597,804.62
5. Step 5: Solve for x
   x = 10,872,597,804.62/89,969.34
6. Step 6: Final answer
   x = 120,847.81