Finding the Fourth Proportional to 42,748.59, 64,139.94 and 17,805.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42,748.59 : 64,139.94 = 17,805.84 : x
2. Step 2: Convert to fraction form
   42,748.59/64,139.94 = 17,805.84/x
3. Step 3: Cross multiply
   42,748.59x = 64,139.94 × 17,805.84
4. Step 4: Simplify right side
   42,748.59x = 1,142,065,509.25
5. Step 5: Solve for x
   x = 1,142,065,509.25/42,748.59
6. Step 6: Final answer
   x = 26,715.86