Finding the Fourth Proportional to 42,760.67, 64,156.28 and 19,066.09

Step by Step Solution

1. Step 1: Write the proportion equation
   42,760.67 : 64,156.28 = 19,066.09 : x
2. Step 2: Convert to fraction form
   42,760.67/64,156.28 = 19,066.09/x
3. Step 3: Cross multiply
   42,760.67x = 64,156.28 × 19,066.09
4. Step 4: Simplify right side
   42,760.67x = 1,223,209,092.68
5. Step 5: Solve for x
   x = 1,223,209,092.68/42,760.67
6. Step 6: Final answer
   x = 28,605.94