Finding the Fourth Proportional to 123,985.41, 171,100.68 and 70,271.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123,985.41 : 171,100.68 = 70,271.31 : x
2. Step 2: Convert to fraction form
   123,985.41/171,100.68 = 70,271.31/x
3. Step 3: Cross multiply
   123,985.41x = 171,100.68 × 70,271.31
4. Step 4: Simplify right side
   123,985.41x = 12,023,468,925.49
5. Step 5: Solve for x
   x = 12,023,468,925.49/123,985.41
6. Step 6: Final answer
   x = 96,974.87