Finding the Fourth Proportional to 129,066.52, 193,674.50 and 54,180.12

Step by Step Solution

1. Step 1: Write the proportion equation
   129,066.52 : 193,674.50 = 54,180.12 : x
2. Step 2: Convert to fraction form
   129,066.52/193,674.50 = 54,180.12/x
3. Step 3: Cross multiply
   129,066.52x = 193,674.50 × 54,180.12
4. Step 4: Simplify right side
   129,066.52x = 10,493,307,650.94
5. Step 5: Solve for x
   x = 10,493,307,650.94/129,066.52
6. Step 6: Final answer
   x = 81,301.55