Finding the Fourth Proportional to 42,870.66, 64,316.10 and 17,896.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,870.66 : 64,316.10 = 17,896.82 : x
2. Step 2: Convert to fraction form
   42,870.66/64,316.10 = 17,896.82/x
3. Step 3: Cross multiply
   42,870.66x = 64,316.10 × 17,896.82
4. Step 4: Simplify right side
   42,870.66x = 1,151,053,664.80
5. Step 5: Solve for x
   x = 1,151,053,664.80/42,870.66
6. Step 6: Final answer
   x = 26,849.45