Finding the Fourth Proportional to 81,977.01, 123,016.46 and 74,089.05

Step by Step Solution

1. Step 1: Write the proportion equation
   81,977.01 : 123,016.46 = 74,089.05 : x
2. Step 2: Convert to fraction form
   81,977.01/123,016.46 = 74,089.05/x
3. Step 3: Cross multiply
   81,977.01x = 123,016.46 × 74,089.05
4. Step 4: Simplify right side
   81,977.01x = 9,114,172,285.32
5. Step 5: Solve for x
   x = 9,114,172,285.32/81,977.01
6. Step 6: Final answer
   x = 111,179.61