Finding the Fourth Proportional to 42,941.20, 64,390.56 and 17,973.76

Step by Step Solution

1. Step 1: Write the proportion equation
   42,941.20 : 64,390.56 = 17,973.76 : x
2. Step 2: Convert to fraction form
   42,941.20/64,390.56 = 17,973.76/x
3. Step 3: Cross multiply
   42,941.20x = 64,390.56 × 17,973.76
4. Step 4: Simplify right side
   42,941.20x = 1,157,340,471.71
5. Step 5: Solve for x
   x = 1,157,340,471.71/42,941.20
6. Step 6: Final answer
   x = 26,951.75