Finding the Fourth Proportional to 118,429.95, 163,431.37 and 64,713.81

Step by Step Solution

1. Step 1: Write the proportion equation
   118,429.95 : 163,431.37 = 64,713.81 : x
2. Step 2: Convert to fraction form
   118,429.95/163,431.37 = 64,713.81/x
3. Step 3: Cross multiply
   118,429.95x = 163,431.37 × 64,713.81
4. Step 4: Simplify right side
   118,429.95x = 10,576,266,626.22
5. Step 5: Solve for x
   x = 10,576,266,626.22/118,429.95
6. Step 6: Final answer
   x = 89,303.99