Finding the Fourth Proportional to 42,145.94, 63,200.21 and 22,420.01

Step by Step Solution

1. Step 1: Write the proportion equation
   42,145.94 : 63,200.21 = 22,420.01 : x
2. Step 2: Convert to fraction form
   42,145.94/63,200.21 = 22,420.01/x
3. Step 3: Cross multiply
   42,145.94x = 63,200.21 × 22,420.01
4. Step 4: Simplify right side
   42,145.94x = 1,416,948,912.10
5. Step 5: Solve for x
   x = 1,416,948,912.10/42,145.94
6. Step 6: Final answer
   x = 33,620.06