Finding the Fourth Proportional to 42,769.29, 64,152.86 and 11,603.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,769.29 : 64,152.86 = 11,603.73 : x
2. Step 2: Convert to fraction form
   42,769.29/64,152.86 = 11,603.73/x
3. Step 3: Cross multiply
   42,769.29x = 64,152.86 × 11,603.73
4. Step 4: Simplify right side
   42,769.29x = 744,412,408.15
5. Step 5: Solve for x
   x = 744,412,408.15/42,769.29
6. Step 6: Final answer
   x = 17,405.30