Finding the Fourth Proportional to 42,847.29, 64,284.06 and 19,174.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,847.29 : 64,284.06 = 19,174.76 : x
2. Step 2: Convert to fraction form
   42,847.29/64,284.06 = 19,174.76/x
3. Step 3: Cross multiply
   42,847.29x = 64,284.06 × 19,174.76
4. Step 4: Simplify right side
   42,847.29x = 1,232,631,100.91
5. Step 5: Solve for x
   x = 1,232,631,100.91/42,847.29
6. Step 6: Final answer
   x = 28,768.01