Finding the Fourth Proportional to 126,385.87, 189,614.24 and 55,314.70

Step by Step Solution

1. Step 1: Write the proportion equation
   126,385.87 : 189,614.24 = 55,314.70 : x
2. Step 2: Convert to fraction form
   126,385.87/189,614.24 = 55,314.70/x
3. Step 3: Cross multiply
   126,385.87x = 189,614.24 × 55,314.70
4. Step 4: Simplify right side
   126,385.87x = 10,488,454,801.33
5. Step 5: Solve for x
   x = 10,488,454,801.33/126,385.87
6. Step 6: Final answer
   x = 82,987.56