Finding the Fourth Proportional to 70,586.94, 105,852.15 and 31,116

Step by Step Solution

1. Step 1: Write the proportion equation
   70,586.94 : 105,852.15 = 31,116 : x
2. Step 2: Convert to fraction form
   70,586.94/105,852.15 = 31,116/x
3. Step 3: Cross multiply
   70,586.94x = 105,852.15 × 31,116
4. Step 4: Simplify right side
   70,586.94x = 3,293,695,499.40
5. Step 5: Solve for x
   x = 3,293,695,499.40/70,586.94
6. Step 6: Final answer
   x = 46,661.54