Finding the Fourth Proportional to 42,113.80, 63,093.90 and 34,280.20

Step by Step Solution

1. Step 1: Write the proportion equation
   42,113.80 : 63,093.90 = 34,280.20 : x
2. Step 2: Convert to fraction form
   42,113.80/63,093.90 = 34,280.20/x
3. Step 3: Cross multiply
   42,113.80x = 63,093.90 × 34,280.20
4. Step 4: Simplify right side
   42,113.80x = 2,162,871,510.78
5. Step 5: Solve for x
   x = 2,162,871,510.78/42,113.80
6. Step 6: Final answer
   x = 51,357.79