Finding the Fourth Proportional to 142,301.55, 196,368.41 and 78,635.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,301.55 : 196,368.41 = 78,635.25 : x
2. Step 2: Convert to fraction form
   142,301.55/196,368.41 = 78,635.25/x
3. Step 3: Cross multiply
   142,301.55x = 196,368.41 × 78,635.25
4. Step 4: Simplify right side
   142,301.55x = 15,441,479,209.04
5. Step 5: Solve for x
   x = 15,441,479,209.04/142,301.55
6. Step 6: Final answer
   x = 108,512.37