Finding the Fourth Proportional to 42,956.83, 64,433.82 and 17,655.47

Step by Step Solution

1. Step 1: Write the proportion equation
   42,956.83 : 64,433.82 = 17,655.47 : x
2. Step 2: Convert to fraction form
   42,956.83/64,433.82 = 17,655.47/x
3. Step 3: Cross multiply
   42,956.83x = 64,433.82 × 17,655.47
4. Step 4: Simplify right side
   42,956.83x = 1,137,609,053.83
5. Step 5: Solve for x
   x = 1,137,609,053.83/42,956.83
6. Step 6: Final answer
   x = 26,482.61