Finding the Fourth Proportional to 117,991.09, 162,825.82 and 64,276.75

Step by Step Solution

1. Step 1: Write the proportion equation
   117,991.09 : 162,825.82 = 64,276.75 : x
2. Step 2: Convert to fraction form
   117,991.09/162,825.82 = 64,276.75/x
3. Step 3: Cross multiply
   117,991.09x = 162,825.82 × 64,276.75
4. Step 4: Simplify right side
   117,991.09x = 10,465,914,525.69
5. Step 5: Solve for x
   x = 10,465,914,525.69/117,991.09
6. Step 6: Final answer
   x = 88,700.89