Finding the Fourth Proportional to 137,451.52, 189,679.89 and 80,866.54

Step by Step Solution

1. Step 1: Write the proportion equation
   137,451.52 : 189,679.89 = 80,866.54 : x
2. Step 2: Convert to fraction form
   137,451.52/189,679.89 = 80,866.54/x
3. Step 3: Cross multiply
   137,451.52x = 189,679.89 × 80,866.54
4. Step 4: Simplify right side
   137,451.52x = 15,338,756,411.88
5. Step 5: Solve for x
   x = 15,338,756,411.88/137,451.52
6. Step 6: Final answer
   x = 111,593.94