Finding the Fourth Proportional to 142,759.68, 197,016.33 and 81,523.95

Step by Step Solution

1. Step 1: Write the proportion equation
   142,759.68 : 197,016.33 = 81,523.95 : x
2. Step 2: Convert to fraction form
   142,759.68/197,016.33 = 81,523.95/x
3. Step 3: Cross multiply
   142,759.68x = 197,016.33 × 81,523.95
4. Step 4: Simplify right side
   142,759.68x = 16,061,549,436.10
5. Step 5: Solve for x
   x = 16,061,549,436.10/142,759.68
6. Step 6: Final answer
   x = 112,507.60