Finding the Fourth Proportional to 78,588.49, 117,907.35 and 50,540.21

Step by Step Solution

1. Step 1: Write the proportion equation
   78,588.49 : 117,907.35 = 50,540.21 : x
2. Step 2: Convert to fraction form
   78,588.49/117,907.35 = 50,540.21/x
3. Step 3: Cross multiply
   78,588.49x = 117,907.35 × 50,540.21
4. Step 4: Simplify right side
   78,588.49x = 5,959,061,976.84
5. Step 5: Solve for x
   x = 5,959,061,976.84/78,588.49
6. Step 6: Final answer
   x = 75,826.15