Finding the Fourth Proportional to 123,895.37, 171,002.82 and 81,457.85

Step by Step Solution

1. Step 1: Write the proportion equation
   123,895.37 : 171,002.82 = 81,457.85 : x
2. Step 2: Convert to fraction form
   123,895.37/171,002.82 = 81,457.85/x
3. Step 3: Cross multiply
   123,895.37x = 171,002.82 × 81,457.85
4. Step 4: Simplify right side
   123,895.37x = 13,929,522,061.14
5. Step 5: Solve for x
   x = 13,929,522,061.14/123,895.37
6. Step 6: Final answer
   x = 112,429.72