Finding the Fourth Proportional to 116,760, 161,128.98 and 66,459

Step by Step Solution

1. Step 1: Write the proportion equation
   116,760 : 161,128.98 = 66,459 : x
2. Step 2: Convert to fraction form
   116,760/161,128.98 = 66,459/x
3. Step 3: Cross multiply
   116,760x = 161,128.98 × 66,459
4. Step 4: Simplify right side
   116,760x = 10,708,470,881.82
5. Step 5: Solve for x
   x = 10,708,470,881.82/116,760
6. Step 6: Final answer
   x = 91,713.52