Finding the Fourth Proportional to 43,560.72, 64,787.76 and 42,724.08

Step by Step Solution

1. Step 1: Write the proportion equation
   43,560.72 : 64,787.76 = 42,724.08 : x
2. Step 2: Convert to fraction form
   43,560.72/64,787.76 = 42,724.08/x
3. Step 3: Cross multiply
   43,560.72x = 64,787.76 × 42,724.08
4. Step 4: Simplify right side
   43,560.72x = 2,767,997,441.26
5. Step 5: Solve for x
   x = 2,767,997,441.26/43,560.72
6. Step 6: Final answer
   x = 63,543.43