Finding the Fourth Proportional to 70,576.79, 105,892.72 and 31,106.16

Step by Step Solution

1. Step 1: Write the proportion equation
   70,576.79 : 105,892.72 = 31,106.16 : x
2. Step 2: Convert to fraction form
   70,576.79/105,892.72 = 31,106.16/x
3. Step 3: Cross multiply
   70,576.79x = 105,892.72 × 31,106.16
4. Step 4: Simplify right side
   70,576.79x = 3,293,915,813.39
5. Step 5: Solve for x
   x = 3,293,915,813.39/70,576.79
6. Step 6: Final answer
   x = 46,671.38