Finding the Fourth Proportional to 127,636.39, 191,454.63 and 57,433.69

Step by Step Solution

1. Step 1: Write the proportion equation
   127,636.39 : 191,454.63 = 57,433.69 : x
2. Step 2: Convert to fraction form
   127,636.39/191,454.63 = 57,433.69/x
3. Step 3: Cross multiply
   127,636.39x = 191,454.63 × 57,433.69
4. Step 4: Simplify right side
   127,636.39x = 10,995,945,868.48
5. Step 5: Solve for x
   x = 10,995,945,868.48/127,636.39
6. Step 6: Final answer
   x = 86,150.56