Finding the Fourth Proportional to 42,533.52, 63,735.62 and 20,316.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,533.52 : 63,735.62 = 20,316.30 : x
2. Step 2: Convert to fraction form
   42,533.52/63,735.62 = 20,316.30/x
3. Step 3: Cross multiply
   42,533.52x = 63,735.62 × 20,316.30
4. Step 4: Simplify right side
   42,533.52x = 1,294,871,875.02
5. Step 5: Solve for x
   x = 1,294,871,875.02/42,533.52
6. Step 6: Final answer
   x = 30,443.56