Finding the Fourth Proportional to 63,078.88, 86,965.12 and 52,283.40

Step by Step Solution

1. Step 1: Write the proportion equation
   63,078.88 : 86,965.12 = 52,283.40 : x
2. Step 2: Convert to fraction form
   63,078.88/86,965.12 = 52,283.40/x
3. Step 3: Cross multiply
   63,078.88x = 86,965.12 × 52,283.40
4. Step 4: Simplify right side
   63,078.88x = 4,546,832,155.01
5. Step 5: Solve for x
   x = 4,546,832,155.01/63,078.88
6. Step 6: Final answer
   x = 72,081.69