Finding the Fourth Proportional to 123,893.66, 170,958.72 and 72,895.18

Step by Step Solution

1. Step 1: Write the proportion equation
   123,893.66 : 170,958.72 = 72,895.18 : x
2. Step 2: Convert to fraction form
   123,893.66/170,958.72 = 72,895.18/x
3. Step 3: Cross multiply
   123,893.66x = 170,958.72 × 72,895.18
4. Step 4: Simplify right side
   123,893.66x = 12,462,066,666.97
5. Step 5: Solve for x
   x = 12,462,066,666.97/123,893.66
6. Step 6: Final answer
   x = 100,586.80