Finding the Fourth Proportional to 129,878.42, 194,815.50 and 41,131.78

Step by Step Solution

1. Step 1: Write the proportion equation
   129,878.42 : 194,815.50 = 41,131.78 : x
2. Step 2: Convert to fraction form
   129,878.42/194,815.50 = 41,131.78/x
3. Step 3: Cross multiply
   129,878.42x = 194,815.50 × 41,131.78
4. Step 4: Simplify right side
   129,878.42x = 8,013,108,286.59
5. Step 5: Solve for x
   x = 8,013,108,286.59/129,878.42
6. Step 6: Final answer
   x = 61,697.00