Finding the Fourth Proportional to 43,085.72, 64,562.58 and 28,993.52

Step by Step Solution

1. Step 1: Write the proportion equation
   43,085.72 : 64,562.58 = 28,993.52 : x
2. Step 2: Convert to fraction form
   43,085.72/64,562.58 = 28,993.52/x
3. Step 3: Cross multiply
   43,085.72x = 64,562.58 × 28,993.52
4. Step 4: Simplify right side
   43,085.72x = 1,871,896,131.67
5. Step 5: Solve for x
   x = 1,871,896,131.67/43,085.72
6. Step 6: Final answer
   x = 43,445.86