Finding the Fourth Proportional to 78,705.10, 118,028.49 and 31,942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705.10 : 118,028.49 = 31,942.18 : x
2. Step 2: Convert to fraction form
   78,705.10/118,028.49 = 31,942.18/x
3. Step 3: Cross multiply
   78,705.10x = 118,028.49 × 31,942.18
4. Step 4: Simplify right side
   78,705.10x = 3,770,087,272.71
5. Step 5: Solve for x
   x = 3,770,087,272.71/78,705.10
6. Step 6: Final answer
   x = 47,901.44