Finding the Fourth Proportional to 42,360.63, 63,499.63 and 20,168.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,360.63 : 63,499.63 = 20,168.04 : x
2. Step 2: Convert to fraction form
   42,360.63/63,499.63 = 20,168.04/x
3. Step 3: Cross multiply
   42,360.63x = 63,499.63 × 20,168.04
4. Step 4: Simplify right side
   42,360.63x = 1,280,663,077.83
5. Step 5: Solve for x
   x = 1,280,663,077.83/42,360.63
6. Step 6: Final answer
   x = 30,232.39