Finding the Fourth Proportional to 80,109.98, 120,236.24 and 42,700.94

Step by Step Solution

1. Step 1: Write the proportion equation
   80,109.98 : 120,236.24 = 42,700.94 : x
2. Step 2: Convert to fraction form
   80,109.98/120,236.24 = 42,700.94/x
3. Step 3: Cross multiply
   80,109.98x = 120,236.24 × 42,700.94
4. Step 4: Simplify right side
   80,109.98x = 5,134,199,975.64
5. Step 5: Solve for x
   x = 5,134,199,975.64/80,109.98
6. Step 6: Final answer
   x = 64,089.40