Finding the Fourth Proportional to 42,748.50, 64,135.17 and 17,783.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,748.50 : 64,135.17 = 17,783.94 : x
2. Step 2: Convert to fraction form
   42,748.50/64,135.17 = 17,783.94/x
3. Step 3: Cross multiply
   42,748.50x = 64,135.17 × 17,783.94
4. Step 4: Simplify right side
   42,748.50x = 1,140,576,015.17
5. Step 5: Solve for x
   x = 1,140,576,015.17/42,748.50
6. Step 6: Final answer
   x = 26,681.08