Finding the Fourth Proportional to 142,231.55, 196,272.32 and 78,557.04

Step by Step Solution

1. Step 1: Write the proportion equation
   142,231.55 : 196,272.32 = 78,557.04 : x
2. Step 2: Convert to fraction form
   142,231.55/196,272.32 = 78,557.04/x
3. Step 3: Cross multiply
   142,231.55x = 196,272.32 × 78,557.04
4. Step 4: Simplify right side
   142,231.55x = 15,418,572,100.35
5. Step 5: Solve for x
   x = 15,418,572,100.35/142,231.55
6. Step 6: Final answer
   x = 108,404.73