Finding the Fourth Proportional to 80,049.61, 120,147.11 and 42,641.58

Step by Step Solution

1. Step 1: Write the proportion equation
   80,049.61 : 120,147.11 = 42,641.58 : x
2. Step 2: Convert to fraction form
   80,049.61/120,147.11 = 42,641.58/x
3. Step 3: Cross multiply
   80,049.61x = 120,147.11 × 42,641.58
4. Step 4: Simplify right side
   80,049.61x = 5,123,262,602.83
5. Step 5: Solve for x
   x = 5,123,262,602.83/80,049.61
6. Step 6: Final answer
   x = 64,001.09