Finding the Fourth Proportional to 129,050.69, 193,566.46 and 54,167.81

Step by Step Solution

1. Step 1: Write the proportion equation
   129,050.69 : 193,566.46 = 54,167.81 : x
2. Step 2: Convert to fraction form
   129,050.69/193,566.46 = 54,167.81/x
3. Step 3: Cross multiply
   129,050.69x = 193,566.46 × 54,167.81
4. Step 4: Simplify right side
   129,050.69x = 10,485,070,956.81
5. Step 5: Solve for x
   x = 10,485,070,956.81/129,050.69
6. Step 6: Final answer
   x = 81,247.69