Finding the Fourth Proportional to 78,839.52, 118,196.49 and 45,521.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,839.52 : 118,196.49 = 45,521.79 : x
2. Step 2: Convert to fraction form
   78,839.52/118,196.49 = 45,521.79/x
3. Step 3: Cross multiply
   78,839.52x = 118,196.49 × 45,521.79
4. Step 4: Simplify right side
   78,839.52x = 5,380,515,796.52
5. Step 5: Solve for x
   x = 5,380,515,796.52/78,839.52
6. Step 6: Final answer
   x = 68,246.43