Finding the Fourth Proportional to 117,806.81, 162,571.15 and 65,417.02

Step by Step Solution

1. Step 1: Write the proportion equation
   117,806.81 : 162,571.15 = 65,417.02 : x
2. Step 2: Convert to fraction form
   117,806.81/162,571.15 = 65,417.02/x
3. Step 3: Cross multiply
   117,806.81x = 162,571.15 × 65,417.02
4. Step 4: Simplify right side
   117,806.81x = 10,634,919,846.32
5. Step 5: Solve for x
   x = 10,634,919,846.32/117,806.81
6. Step 6: Final answer
   x = 90,274.24