Finding the Fourth Proportional to 42,749.82, 64,136.56 and 17,801.60

Step by Step Solution

1. Step 1: Write the proportion equation
   42,749.82 : 64,136.56 = 17,801.60 : x
2. Step 2: Convert to fraction form
   42,749.82/64,136.56 = 17,801.60/x
3. Step 3: Cross multiply
   42,749.82x = 64,136.56 × 17,801.60
4. Step 4: Simplify right side
   42,749.82x = 1,141,733,386.50
5. Step 5: Solve for x
   x = 1,141,733,386.50/42,749.82
6. Step 6: Final answer
   x = 26,707.33