Finding the Fourth Proportional to 66,429.50, 91,669.43 and 37,745.42

Step by Step Solution

1. Step 1: Write the proportion equation
   66,429.50 : 91,669.43 = 37,745.42 : x
2. Step 2: Convert to fraction form
   66,429.50/91,669.43 = 37,745.42/x
3. Step 3: Cross multiply
   66,429.50x = 91,669.43 × 37,745.42
4. Step 4: Simplify right side
   66,429.50x = 3,460,100,772.53
5. Step 5: Solve for x
   x = 3,460,100,772.53/66,429.50
6. Step 6: Final answer
   x = 52,086.81