Finding the Fourth Proportional to 116,667.51, 160,992.81 and 65,677.60

Step by Step Solution

1. Step 1: Write the proportion equation
   116,667.51 : 160,992.81 = 65,677.60 : x
2. Step 2: Convert to fraction form
   116,667.51/160,992.81 = 65,677.60/x
3. Step 3: Cross multiply
   116,667.51x = 160,992.81 × 65,677.60
4. Step 4: Simplify right side
   116,667.51x = 10,573,621,378.06
5. Step 5: Solve for x
   x = 10,573,621,378.06/116,667.51
6. Step 6: Final answer
   x = 90,630.39