Finding the Fourth Proportional to 141,890.80, 195,810.72 and 78,226.96

Step by Step Solution

1. Step 1: Write the proportion equation
   141,890.80 : 195,810.72 = 78,226.96 : x
2. Step 2: Convert to fraction form
   141,890.80/195,810.72 = 78,226.96/x
3. Step 3: Cross multiply
   141,890.80x = 195,810.72 × 78,226.96
4. Step 4: Simplify right side
   141,890.80x = 15,317,677,361.01
5. Step 5: Solve for x
   x = 15,317,677,361.01/141,890.80
6. Step 6: Final answer
   x = 107,953.99