Finding the Fourth Proportional to 137,042.84, 189,150.72 and 89,212.88

Step by Step Solution

1. Step 1: Write the proportion equation
   137,042.84 : 189,150.72 = 89,212.88 : x
2. Step 2: Convert to fraction form
   137,042.84/189,150.72 = 89,212.88/x
3. Step 3: Cross multiply
   137,042.84x = 189,150.72 × 89,212.88
4. Step 4: Simplify right side
   137,042.84x = 16,874,680,485.27
5. Step 5: Solve for x
   x = 16,874,680,485.27/137,042.84
6. Step 6: Final answer
   x = 123,134.35