Finding the Fourth Proportional to 142,799.55, 197,071.23 and 79,135.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,799.55 : 197,071.23 = 79,135.98 : x
2. Step 2: Convert to fraction form
   142,799.55/197,071.23 = 79,135.98/x
3. Step 3: Cross multiply
   142,799.55x = 197,071.23 × 79,135.98
4. Step 4: Simplify right side
   142,799.55x = 15,595,424,915.86
5. Step 5: Solve for x
   x = 15,595,424,915.86/142,799.55
6. Step 6: Final answer
   x = 109,212.00