Finding the Fourth Proportional to 126,518.12, 189,780.54 and 55,404.02

Step by Step Solution

1. Step 1: Write the proportion equation
   126,518.12 : 189,780.54 = 55,404.02 : x
2. Step 2: Convert to fraction form
   126,518.12/189,780.54 = 55,404.02/x
3. Step 3: Cross multiply
   126,518.12x = 189,780.54 × 55,404.02
4. Step 4: Simplify right side
   126,518.12x = 10,514,604,833.77
5. Step 5: Solve for x
   x = 10,514,604,833.77/126,518.12
6. Step 6: Final answer
   x = 83,107.50