Finding the Fourth Proportional to 78,461.71, 117,664.04 and 42,949.25

Step by Step Solution

1. Step 1: Write the proportion equation
   78,461.71 : 117,664.04 = 42,949.25 : x
2. Step 2: Convert to fraction form
   78,461.71/117,664.04 = 42,949.25/x
3. Step 3: Cross multiply
   78,461.71x = 117,664.04 × 42,949.25
4. Step 4: Simplify right side
   78,461.71x = 5,053,582,230.26
5. Step 5: Solve for x
   x = 5,053,582,230.26/78,461.71
6. Step 6: Final answer
   x = 64,408.26