Finding the Fourth Proportional to 42,736.18, 64,099.41 and 11,573.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,736.18 : 64,099.41 = 11,573.86 : x
2. Step 2: Convert to fraction form
   42,736.18/64,099.41 = 11,573.86/x
3. Step 3: Cross multiply
   42,736.18x = 64,099.41 × 11,573.86
4. Step 4: Simplify right side
   42,736.18x = 741,877,597.42
5. Step 5: Solve for x
   x = 741,877,597.42/42,736.18
6. Step 6: Final answer
   x = 17,359.47