Finding the Fourth Proportional to 128,334.69, 192,534.83 and 53,429.94

Step by Step Solution

1. Step 1: Write the proportion equation
   128,334.69 : 192,534.83 = 53,429.94 : x
2. Step 2: Convert to fraction form
   128,334.69/192,534.83 = 53,429.94/x
3. Step 3: Cross multiply
   128,334.69x = 192,534.83 × 53,429.94
4. Step 4: Simplify right side
   128,334.69x = 10,287,124,548.39
5. Step 5: Solve for x
   x = 10,287,124,548.39/128,334.69
6. Step 6: Final answer
   x = 80,158.56