Finding the Fourth Proportional to 79,200.42, 109,296.61 and 43,390.55

Step by Step Solution

1. Step 1: Write the proportion equation
   79,200.42 : 109,296.61 = 43,390.55 : x
2. Step 2: Convert to fraction form
   79,200.42/109,296.61 = 43,390.55/x
3. Step 3: Cross multiply
   79,200.42x = 109,296.61 × 43,390.55
4. Step 4: Simplify right side
   79,200.42x = 4,742,440,185.80
5. Step 5: Solve for x
   x = 4,742,440,185.80/79,200.42
6. Step 6: Final answer
   x = 59,878.98