Finding the Fourth Proportional to 80,183.31, 120,239.42 and 42,736.43

Step by Step Solution

1. Step 1: Write the proportion equation
   80,183.31 : 120,239.42 = 42,736.43 : x
2. Step 2: Convert to fraction form
   80,183.31/120,239.42 = 42,736.43/x
3. Step 3: Cross multiply
   80,183.31x = 120,239.42 × 42,736.43
4. Step 4: Simplify right side
   80,183.31x = 5,138,602,741.19
5. Step 5: Solve for x
   x = 5,138,602,741.19/80,183.31
6. Step 6: Final answer
   x = 64,085.69