Finding the Fourth Proportional to 42,503.96, 63,763.23 and 12,924.74

Step by Step Solution

1. Step 1: Write the proportion equation
   42,503.96 : 63,763.23 = 12,924.74 : x
2. Step 2: Convert to fraction form
   42,503.96/63,763.23 = 12,924.74/x
3. Step 3: Cross multiply
   42,503.96x = 63,763.23 × 12,924.74
4. Step 4: Simplify right side
   42,503.96x = 824,123,169.31
5. Step 5: Solve for x
   x = 824,123,169.31/42,503.96
6. Step 6: Final answer
   x = 19,389.33