Finding the Fourth Proportional to 118,494.04, 177,785.94 and 71,142.20

Step by Step Solution

1. Step 1: Write the proportion equation
   118,494.04 : 177,785.94 = 71,142.20 : x
2. Step 2: Convert to fraction form
   118,494.04/177,785.94 = 71,142.20/x
3. Step 3: Cross multiply
   118,494.04x = 177,785.94 × 71,142.20
4. Step 4: Simplify right side
   118,494.04x = 12,648,082,900.67
5. Step 5: Solve for x
   x = 12,648,082,900.67/118,494.04
6. Step 6: Final answer
   x = 106,740.25