Finding the Fourth Proportional to 127,637.39, 191,456.13 and 57,434.69

Step by Step Solution

1. Step 1: Write the proportion equation
   127,637.39 : 191,456.13 = 57,434.69 : x
2. Step 2: Convert to fraction form
   127,637.39/191,456.13 = 57,434.69/x
3. Step 3: Cross multiply
   127,637.39x = 191,456.13 × 57,434.69
4. Step 4: Simplify right side
   127,637.39x = 10,996,223,475.15
5. Step 5: Solve for x
   x = 10,996,223,475.15/127,637.39
6. Step 6: Final answer
   x = 86,152.06