Finding the Fourth Proportional to 126,507.67, 189,792.62 and 89,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   126,507.67 : 189,792.62 = 89,140.72 : x
2. Step 2: Convert to fraction form
   126,507.67/189,792.62 = 89,140.72/x
3. Step 3: Cross multiply
   126,507.67x = 189,792.62 × 89,140.72
4. Step 4: Simplify right side
   126,507.67x = 16,918,250,797.49
5. Step 5: Solve for x
   x = 16,918,250,797.49/126,507.67
6. Step 6: Final answer
   x = 133,733.00