Finding the Fourth Proportional to 42,733.74, 64,123.56 and 21,957.24

Step by Step Solution

1. Step 1: Write the proportion equation
   42,733.74 : 64,123.56 = 21,957.24 : x
2. Step 2: Convert to fraction form
   42,733.74/64,123.56 = 21,957.24/x
3. Step 3: Cross multiply
   42,733.74x = 64,123.56 × 21,957.24
4. Step 4: Simplify right side
   42,733.74x = 1,407,976,396.57
5. Step 5: Solve for x
   x = 1,407,976,396.57/42,733.74
6. Step 6: Final answer
   x = 32,947.65