Finding the Fourth Proportional to 127,158.72, 190,807.20 and 53,338.56

Step by Step Solution

1. Step 1: Write the proportion equation
   127,158.72 : 190,807.20 = 53,338.56 : x
2. Step 2: Convert to fraction form
   127,158.72/190,807.20 = 53,338.56/x
3. Step 3: Cross multiply
   127,158.72x = 190,807.20 × 53,338.56
4. Step 4: Simplify right side
   127,158.72x = 10,177,381,285.63
5. Step 5: Solve for x
   x = 10,177,381,285.63/127,158.72
6. Step 6: Final answer
   x = 80,036.83