Finding the Fourth Proportional to 126,255.04, 189,404.42 and 56,139.82

Step by Step Solution

1. Step 1: Write the proportion equation
   126,255.04 : 189,404.42 = 56,139.82 : x
2. Step 2: Convert to fraction form
   126,255.04/189,404.42 = 56,139.82/x
3. Step 3: Cross multiply
   126,255.04x = 189,404.42 × 56,139.82
4. Step 4: Simplify right side
   126,255.04x = 10,633,130,046.00
5. Step 5: Solve for x
   x = 10,633,130,046.00/126,255.04
6. Step 6: Final answer
   x = 84,219.45