Finding the Fourth Proportional to 42,798.02, 64,172.72 and 35,821.49

Step by Step Solution

1. Step 1: Write the proportion equation
   42,798.02 : 64,172.72 = 35,821.49 : x
2. Step 2: Convert to fraction form
   42,798.02/64,172.72 = 35,821.49/x
3. Step 3: Cross multiply
   42,798.02x = 64,172.72 × 35,821.49
4. Step 4: Simplify right side
   42,798.02x = 2,298,761,947.78
5. Step 5: Solve for x
   x = 2,298,761,947.78/42,798.02
6. Step 6: Final answer
   x = 53,711.88