Finding the Fourth Proportional to 66,243.89, 91,420.43 and 37,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   66,243.89 : 91,420.43 = 37,564.72 : x
2. Step 2: Convert to fraction form
   66,243.89/91,420.43 = 37,564.72/x
3. Step 3: Cross multiply
   66,243.89x = 91,420.43 × 37,564.72
4. Step 4: Simplify right side
   66,243.89x = 3,434,182,438.85
5. Step 5: Solve for x
   x = 3,434,182,438.85/66,243.89
6. Step 6: Final answer
   x = 51,841.50