Finding the Fourth Proportional to 42,968.55, 64,376.58 and 17,953.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,968.55 : 64,376.58 = 17,953.56 : x
2. Step 2: Convert to fraction form
   42,968.55/64,376.58 = 17,953.56/x
3. Step 3: Cross multiply
   42,968.55x = 64,376.58 × 17,953.56
4. Step 4: Simplify right side
   42,968.55x = 1,155,788,791.62
5. Step 5: Solve for x
   x = 1,155,788,791.62/42,968.55
6. Step 6: Final answer
   x = 26,898.48