Finding the Fourth Proportional to 142,056.18, 196,108.49 and 88,358.45

Step by Step Solution

1. Step 1: Write the proportion equation
   142,056.18 : 196,108.49 = 88,358.45 : x
2. Step 2: Convert to fraction form
   142,056.18/196,108.49 = 88,358.45/x
3. Step 3: Cross multiply
   142,056.18x = 196,108.49 × 88,358.45
4. Step 4: Simplify right side
   142,056.18x = 17,327,841,448.59
5. Step 5: Solve for x
   x = 17,327,841,448.59/142,056.18
6. Step 6: Final answer
   x = 121,978.79