Finding the Fourth Proportional to 105,676.81, 145,880.54 and 73,970.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105,676.81 : 145,880.54 = 73,970.17 : x
2. Step 2: Convert to fraction form
   105,676.81/145,880.54 = 73,970.17/x
3. Step 3: Cross multiply
   105,676.81x = 145,880.54 × 73,970.17
4. Step 4: Simplify right side
   105,676.81x = 10,790,808,343.49
5. Step 5: Solve for x
   x = 10,790,808,343.49/105,676.81
6. Step 6: Final answer
   x = 102,111.41