Finding the Fourth Proportional to 42,932.20, 64,391.01 and 11,342.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42,932.20 : 64,391.01 = 11,342.61 : x
2. Step 2: Convert to fraction form
   42,932.20/64,391.01 = 11,342.61/x
3. Step 3: Cross multiply
   42,932.20x = 64,391.01 × 11,342.61
4. Step 4: Simplify right side
   42,932.20x = 730,362,113.94
5. Step 5: Solve for x
   x = 730,362,113.94/42,932.20
6. Step 6: Final answer
   x = 17,011.99