Finding the Fourth Proportional to 79,131.18, 109,200.87 and 43,320.90

Step by Step Solution

1. Step 1: Write the proportion equation
   79,131.18 : 109,200.87 = 43,320.90 : x
2. Step 2: Convert to fraction form
   79,131.18/109,200.87 = 43,320.90/x
3. Step 3: Cross multiply
   79,131.18x = 109,200.87 × 43,320.90
4. Step 4: Simplify right side
   79,131.18x = 4,730,679,969.18
5. Step 5: Solve for x
   x = 4,730,679,969.18/79,131.18
6. Step 6: Final answer
   x = 59,782.76