Finding the Fourth Proportional to 64,491.51, 89,003.70 and 37,635.78

Step by Step Solution

1. Step 1: Write the proportion equation
   64,491.51 : 89,003.70 = 37,635.78 : x
2. Step 2: Convert to fraction form
   64,491.51/89,003.70 = 37,635.78/x
3. Step 3: Cross multiply
   64,491.51x = 89,003.70 × 37,635.78
4. Step 4: Simplify right side
   64,491.51x = 3,349,723,672.39
5. Step 5: Solve for x
   x = 3,349,723,672.39/64,491.51
6. Step 6: Final answer
   x = 51,940.54