Finding the Fourth Proportional to 123,875.70, 171,019.41 and 81,557.25

Step by Step Solution

1. Step 1: Write the proportion equation
   123,875.70 : 171,019.41 = 81,557.25 : x
2. Step 2: Convert to fraction form
   123,875.70/171,019.41 = 81,557.25/x
3. Step 3: Cross multiply
   123,875.70x = 171,019.41 × 81,557.25
4. Step 4: Simplify right side
   123,875.70x = 13,947,872,776.22
5. Step 5: Solve for x
   x = 13,947,872,776.22/123,875.70
6. Step 6: Final answer
   x = 112,595.71