Finding the Fourth Proportional to 129,648.23, 194,546.15 and 103,519.05

Step by Step Solution

1. Step 1: Write the proportion equation
   129,648.23 : 194,546.15 = 103,519.05 : x
2. Step 2: Convert to fraction form
   129,648.23/194,546.15 = 103,519.05/x
3. Step 3: Cross multiply
   129,648.23x = 194,546.15 × 103,519.05
4. Step 4: Simplify right side
   129,648.23x = 20,139,232,111.56
5. Step 5: Solve for x
   x = 20,139,232,111.56/129,648.23
6. Step 6: Final answer
   x = 155,337.51