Finding the Fourth Proportional to 115,325.72, 172,791.74 and 62,640.89

Step by Step Solution

1. Step 1: Write the proportion equation
   115,325.72 : 172,791.74 = 62,640.89 : x
2. Step 2: Convert to fraction form
   115,325.72/172,791.74 = 62,640.89/x
3. Step 3: Cross multiply
   115,325.72x = 172,791.74 × 62,640.89
4. Step 4: Simplify right side
   115,325.72x = 10,823,827,670.89
5. Step 5: Solve for x
   x = 10,823,827,670.89/115,325.72
6. Step 6: Final answer
   x = 93,854.42