Finding the Fourth Proportional to 142,254.48, 196,316.76 and 81,825

Step by Step Solution

1. Step 1: Write the proportion equation
   142,254.48 : 196,316.76 = 81,825 : x
2. Step 2: Convert to fraction form
   142,254.48/196,316.76 = 81,825/x
3. Step 3: Cross multiply
   142,254.48x = 196,316.76 × 81,825
4. Step 4: Simplify right side
   142,254.48x = 16,063,618,887
5. Step 5: Solve for x
   x = 16,063,618,887/142,254.48
6. Step 6: Final answer
   x = 112,921.71