Finding the Fourth Proportional to 48,064.32, 65,975.76 and 42,640.56

Step by Step Solution

1. Step 1: Write the proportion equation
   48,064.32 : 65,975.76 = 42,640.56 : x
2. Step 2: Convert to fraction form
   48,064.32/65,975.76 = 42,640.56/x
3. Step 3: Cross multiply
   48,064.32x = 65,975.76 × 42,640.56
4. Step 4: Simplify right side
   48,064.32x = 2,813,243,352.83
5. Step 5: Solve for x
   x = 2,813,243,352.83/48,064.32
6. Step 6: Final answer
   x = 58,530.81