Finding the Fourth Proportional to 127,972.53, 191,876.61 and 53,144.31

Step by Step Solution

1. Step 1: Write the proportion equation
   127,972.53 : 191,876.61 = 53,144.31 : x
2. Step 2: Convert to fraction form
   127,972.53/191,876.61 = 53,144.31/x
3. Step 3: Cross multiply
   127,972.53x = 191,876.61 × 53,144.31
4. Step 4: Simplify right side
   127,972.53x = 10,197,150,043.59
5. Step 5: Solve for x
   x = 10,197,150,043.59/127,972.53
6. Step 6: Final answer
   x = 79,682.34