Finding the Fourth Proportional to 113,005.72, 155,945.82 and 62,703.64

Step by Step Solution

1. Step 1: Write the proportion equation
   113,005.72 : 155,945.82 = 62,703.64 : x
2. Step 2: Convert to fraction form
   113,005.72/155,945.82 = 62,703.64/x
3. Step 3: Cross multiply
   113,005.72x = 155,945.82 × 62,703.64
4. Step 4: Simplify right side
   113,005.72x = 9,778,370,556.78
5. Step 5: Solve for x
   x = 9,778,370,556.78/113,005.72
6. Step 6: Final answer
   x = 86,529.87