Finding the Fourth Proportional to 42,360.21, 63,499.01 and 20,167.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,360.21 : 63,499.01 = 20,167.63 : x
2. Step 2: Convert to fraction form
   42,360.21/63,499.01 = 20,167.63/x
3. Step 3: Cross multiply
   42,360.21x = 63,499.01 × 20,167.63
4. Step 4: Simplify right side
   42,360.21x = 1,280,624,279.46
5. Step 5: Solve for x
   x = 1,280,624,279.46/42,360.21
6. Step 6: Final answer
   x = 30,231.77