Finding the Fourth Proportional to 105,317.27, 145,294.31 and 73,504.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,317.27 : 145,294.31 = 73,504.79 : x
2. Step 2: Convert to fraction form
   105,317.27/145,294.31 = 73,504.79/x
3. Step 3: Cross multiply
   105,317.27x = 145,294.31 × 73,504.79
4. Step 4: Simplify right side
   105,317.27x = 10,679,827,018.27
5. Step 5: Solve for x
   x = 10,679,827,018.27/105,317.27
6. Step 6: Final answer
   x = 101,406.23