Finding the Fourth Proportional to 80,149.95, 120,188.43 and 42,700.41

Step by Step Solution

1. Step 1: Write the proportion equation
   80,149.95 : 120,188.43 = 42,700.41 : x
2. Step 2: Convert to fraction form
   80,149.95/120,188.43 = 42,700.41/x
3. Step 3: Cross multiply
   80,149.95x = 120,188.43 × 42,700.41
4. Step 4: Simplify right side
   80,149.95x = 5,132,095,238.26
5. Step 5: Solve for x
   x = 5,132,095,238.26/80,149.95
6. Step 6: Final answer
   x = 64,031.17