Finding the Fourth Proportional to 141,721.52, 195,575.69 and 78,059.31

Step by Step Solution

1. Step 1: Write the proportion equation
   141,721.52 : 195,575.69 = 78,059.31 : x
2. Step 2: Convert to fraction form
   141,721.52/195,575.69 = 78,059.31/x
3. Step 3: Cross multiply
   141,721.52x = 195,575.69 × 78,059.31
4. Step 4: Simplify right side
   141,721.52x = 15,266,503,756.48
5. Step 5: Solve for x
   x = 15,266,503,756.48/141,721.52
6. Step 6: Final answer
   x = 107,721.85