Finding the Fourth Proportional to 116,713.32, 161,016.69 and 86,159.55

Step by Step Solution

1. Step 1: Write the proportion equation
   116,713.32 : 161,016.69 = 86,159.55 : x
2. Step 2: Convert to fraction form
   116,713.32/161,016.69 = 86,159.55/x
3. Step 3: Cross multiply
   116,713.32x = 161,016.69 × 86,159.55
4. Step 4: Simplify right side
   116,713.32x = 13,873,125,552.89
5. Step 5: Solve for x
   x = 13,873,125,552.89/116,713.32
6. Step 6: Final answer
   x = 118,864.97