Finding the Fourth Proportional to 42,436.48, 63,654.72 and 19,061.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,436.48 : 63,654.72 = 19,061.12 : x
2. Step 2: Convert to fraction form
   42,436.48/63,654.72 = 19,061.12/x
3. Step 3: Cross multiply
   42,436.48x = 63,654.72 × 19,061.12
4. Step 4: Simplify right side
   42,436.48x = 1,213,330,256.49
5. Step 5: Solve for x
   x = 1,213,330,256.49/42,436.48
6. Step 6: Final answer
   x = 28,591.68