Finding the Fourth Proportional to 116,987.27, 161,443.99 and 65,999.83

Step by Step Solution

1. Step 1: Write the proportion equation
   116,987.27 : 161,443.99 = 65,999.83 : x
2. Step 2: Convert to fraction form
   116,987.27/161,443.99 = 65,999.83/x
3. Step 3: Cross multiply
   116,987.27x = 161,443.99 × 65,999.83
4. Step 4: Simplify right side
   116,987.27x = 10,655,275,729.52
5. Step 5: Solve for x
   x = 10,655,275,729.52/116,987.27
6. Step 6: Final answer
   x = 91,080.64