Finding the Fourth Proportional to 118,145.30, 163,040.79 and 67,158.37

Step by Step Solution

1. Step 1: Write the proportion equation
   118,145.30 : 163,040.79 = 67,158.37 : x
2. Step 2: Convert to fraction form
   118,145.30/163,040.79 = 67,158.37/x
3. Step 3: Cross multiply
   118,145.30x = 163,040.79 × 67,158.37
4. Step 4: Simplify right side
   118,145.30x = 10,949,553,699.91
5. Step 5: Solve for x
   x = 10,949,553,699.91/118,145.30
6. Step 6: Final answer
   x = 92,678.71