Finding the Fourth Proportional to 116,635.57, 161,034.56 and 89,730.61

Step by Step Solution

1. Step 1: Write the proportion equation
   116,635.57 : 161,034.56 = 89,730.61 : x
2. Step 2: Convert to fraction form
   116,635.57/161,034.56 = 89,730.61/x
3. Step 3: Cross multiply
   116,635.57x = 161,034.56 × 89,730.61
4. Step 4: Simplify right side
   116,635.57x = 14,449,729,299.88
5. Step 5: Solve for x
   x = 14,449,729,299.88/116,635.57
6. Step 6: Final answer
   x = 123,887.84