Finding the Fourth Proportional to 142,457.18, 196,629.78 and 88,710.44

Step by Step Solution

1. Step 1: Write the proportion equation
   142,457.18 : 196,629.78 = 88,710.44 : x
2. Step 2: Convert to fraction form
   142,457.18/196,629.78 = 88,710.44/x
3. Step 3: Cross multiply
   142,457.18x = 196,629.78 × 88,710.44
4. Step 4: Simplify right side
   142,457.18x = 17,443,113,857.35
5. Step 5: Solve for x
   x = 17,443,113,857.35/142,457.18
6. Step 6: Final answer
   x = 122,444.61