Finding the Fourth Proportional to 45,783, 68,986.47 and 37,645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   45,783 : 68,986.47 = 37,645.31 : x
2. Step 2: Convert to fraction form
   45,783/68,986.47 = 37,645.31/x
3. Step 3: Cross multiply
   45,783x = 68,986.47 × 37,645.31
4. Step 4: Simplify right side
   45,783x = 2,597,017,150.84
5. Step 5: Solve for x
   x = 2,597,017,150.84/45,783
6. Step 6: Final answer
   x = 56,724.49