Finding the Fourth Proportional to 80,173.37, 120,224.51 and 42,726.47

Step by Step Solution

1. Step 1: Write the proportion equation
   80,173.37 : 120,224.51 = 42,726.47 : x
2. Step 2: Convert to fraction form
   80,173.37/120,224.51 = 42,726.47/x
3. Step 3: Cross multiply
   80,173.37x = 120,224.51 × 42,726.47
4. Step 4: Simplify right side
   80,173.37x = 5,136,768,265.25
5. Step 5: Solve for x
   x = 5,136,768,265.25/80,173.37
6. Step 6: Final answer
   x = 64,070.75