Finding the Fourth Proportional to 42,973.67, 64,472.15 and 18,000.56

Step by Step Solution

1. Step 1: Write the proportion equation
   42,973.67 : 64,472.15 = 18,000.56 : x
2. Step 2: Convert to fraction form
   42,973.67/64,472.15 = 18,000.56/x
3. Step 3: Cross multiply
   42,973.67x = 64,472.15 × 18,000.56
4. Step 4: Simplify right side
   42,973.67x = 1,160,535,010.59
5. Step 5: Solve for x
   x = 1,160,535,010.59/42,973.67
6. Step 6: Final answer
   x = 27,005.72