Finding the Fourth Proportional to 113,404.27, 170,100.76 and 42,321.47

Step by Step Solution

1. Step 1: Write the proportion equation
   113,404.27 : 170,100.76 = 42,321.47 : x
2. Step 2: Convert to fraction form
   113,404.27/170,100.76 = 42,321.47/x
3. Step 3: Cross multiply
   113,404.27x = 170,100.76 × 42,321.47
4. Step 4: Simplify right side
   113,404.27x = 7,198,913,932.37
5. Step 5: Solve for x
   x = 7,198,913,932.37/113,404.27
6. Step 6: Final answer
   x = 63,480.10