Finding the Fourth Proportional to 127,200.24, 190,796.31 and 56,100.87

Step by Step Solution

1. Step 1: Write the proportion equation
   127,200.24 : 190,796.31 = 56,100.87 : x
2. Step 2: Convert to fraction form
   127,200.24/190,796.31 = 56,100.87/x
3. Step 3: Cross multiply
   127,200.24x = 190,796.31 × 56,100.87
4. Step 4: Simplify right side
   127,200.24x = 10,703,838,983.79
5. Step 5: Solve for x
   x = 10,703,838,983.79/127,200.24
6. Step 6: Final answer
   x = 84,149.52