Finding the Fourth Proportional to 142,064, 196,054.56 and 81,654.08

Step by Step Solution

1. Step 1: Write the proportion equation
   142,064 : 196,054.56 = 81,654.08 : x
2. Step 2: Convert to fraction form
   142,064/196,054.56 = 81,654.08/x
3. Step 3: Cross multiply
   142,064x = 196,054.56 × 81,654.08
4. Step 4: Simplify right side
   142,064x = 16,008,654,726.60
5. Step 5: Solve for x
   x = 16,008,654,726.60/142,064
6. Step 6: Final answer
   x = 112,686.22