Finding the Fourth Proportional to 42,574.08, 63,815.76 and 20,373.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,574.08 : 63,815.76 = 20,373.60 : x
2. Step 2: Convert to fraction form
   42,574.08/63,815.76 = 20,373.60/x
3. Step 3: Cross multiply
   42,574.08x = 63,815.76 × 20,373.60
4. Step 4: Simplify right side
   42,574.08x = 1,300,156,767.94
5. Step 5: Solve for x
   x = 1,300,156,767.94/42,574.08
6. Step 6: Final answer
   x = 30,538.69