Finding the Fourth Proportional to 42,862.35, 64,303.79 and 17,888.51

Step by Step Solution

1. Step 1: Write the proportion equation
   42,862.35 : 64,303.79 = 17,888.51 : x
2. Step 2: Convert to fraction form
   42,862.35/64,303.79 = 17,888.51/x
3. Step 3: Cross multiply
   42,862.35x = 64,303.79 × 17,888.51
4. Step 4: Simplify right side
   42,862.35x = 1,150,298,990.45
5. Step 5: Solve for x
   x = 1,150,298,990.45/42,862.35
6. Step 6: Final answer
   x = 26,837.05