Finding the Fourth Proportional to 42,984.30, 64,437.57 and 15,275.82

Step by Step Solution

1. Step 1: Write the proportion equation
   42,984.30 : 64,437.57 = 15,275.82 : x
2. Step 2: Convert to fraction form
   42,984.30/64,437.57 = 15,275.82/x
3. Step 3: Cross multiply
   42,984.30x = 64,437.57 × 15,275.82
4. Step 4: Simplify right side
   42,984.30x = 984,336,720.56
5. Step 5: Solve for x
   x = 984,336,720.56/42,984.30
6. Step 6: Final answer
   x = 22,899.91