Finding the Fourth Proportional to 141,898.89, 195,816.42 and 78,236.76

Step by Step Solution

1. Step 1: Write the proportion equation
   141,898.89 : 195,816.42 = 78,236.76 : x
2. Step 2: Convert to fraction form
   141,898.89/195,816.42 = 78,236.76/x
3. Step 3: Cross multiply
   141,898.89x = 195,816.42 × 78,236.76
4. Step 4: Simplify right side
   141,898.89x = 15,320,042,255.60
5. Step 5: Solve for x
   x = 15,320,042,255.60/141,898.89
6. Step 6: Final answer
   x = 107,964.50