Finding the Fourth Proportional to 42,714.53, 64,071.63 and 11,549.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,714.53 : 64,071.63 = 11,549.78 : x
2. Step 2: Convert to fraction form
   42,714.53/64,071.63 = 11,549.78/x
3. Step 3: Cross multiply
   42,714.53x = 64,071.63 × 11,549.78
4. Step 4: Simplify right side
   42,714.53x = 740,012,910.38
5. Step 5: Solve for x
   x = 740,012,910.38/42,714.53
6. Step 6: Final answer
   x = 17,324.62