Finding the Fourth Proportional to 123,975.48, 171,086.40 and 67,386.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,975.48 : 171,086.40 = 67,386.72 : x
2. Step 2: Convert to fraction form
   123,975.48/171,086.40 = 67,386.72/x
3. Step 3: Cross multiply
   123,975.48x = 171,086.40 × 67,386.72
4. Step 4: Simplify right side
   123,975.48x = 11,528,951,332.61
5. Step 5: Solve for x
   x = 11,528,951,332.61/123,975.48
6. Step 6: Final answer
   x = 92,993.80