Finding the Fourth Proportional to 142,335.39, 196,442.37 and 81,904.80

Step by Step Solution

1. Step 1: Write the proportion equation
   142,335.39 : 196,442.37 = 81,904.80 : x
2. Step 2: Convert to fraction form
   142,335.39/196,442.37 = 81,904.80/x
3. Step 3: Cross multiply
   142,335.39x = 196,442.37 × 81,904.80
4. Step 4: Simplify right side
   142,335.39x = 16,089,573,026.38
5. Step 5: Solve for x
   x = 16,089,573,026.38/142,335.39
6. Step 6: Final answer
   x = 113,039.86