Finding the Fourth Proportional to 124,660, 172,031.71 and 68,071.38

Step by Step Solution

1. Step 1: Write the proportion equation
   124,660 : 172,031.71 = 68,071.38 : x
2. Step 2: Convert to fraction form
   124,660/172,031.71 = 68,071.38/x
3. Step 3: Cross multiply
   124,660x = 172,031.71 × 68,071.38
4. Step 4: Simplify right side
   124,660x = 11,710,435,903.46
5. Step 5: Solve for x
   x = 11,710,435,903.46/124,660
6. Step 6: Final answer
   x = 93,939.00