Finding the Fourth Proportional to 127,632.39, 191,448.63 and 57,429.69

Step by Step Solution

1. Step 1: Write the proportion equation
   127,632.39 : 191,448.63 = 57,429.69 : x
2. Step 2: Convert to fraction form
   127,632.39/191,448.63 = 57,429.69/x
3. Step 3: Cross multiply
   127,632.39x = 191,448.63 × 57,429.69
4. Step 4: Simplify right side
   127,632.39x = 10,994,835,471.82
5. Step 5: Solve for x
   x = 10,994,835,471.82/127,632.39
6. Step 6: Final answer
   x = 86,144.56