Finding the Fourth Proportional to 42,956.57, 64,459.97 and 17,994.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,956.57 : 64,459.97 = 17,994.50 : x
2. Step 2: Convert to fraction form
   42,956.57/64,459.97 = 17,994.50/x
3. Step 3: Cross multiply
   42,956.57x = 64,459.97 × 17,994.50
4. Step 4: Simplify right side
   42,956.57x = 1,159,924,930.17
5. Step 5: Solve for x
   x = 1,159,924,930.17/42,956.57
6. Step 6: Final answer
   x = 27,002.27