Finding the Fourth Proportional to 78,185.52, 117,278.24 and 31,427.46

Step by Step Solution

1. Step 1: Write the proportion equation
   78,185.52 : 117,278.24 = 31,427.46 : x
2. Step 2: Convert to fraction form
   78,185.52/117,278.24 = 31,427.46/x
3. Step 3: Cross multiply
   78,185.52x = 117,278.24 × 31,427.46
4. Step 4: Simplify right side
   78,185.52x = 3,685,757,039.33
5. Step 5: Solve for x
   x = 3,685,757,039.33/78,185.52
6. Step 6: Final answer
   x = 47,141.17