Finding the Fourth Proportional to 65,478.78, 90,355.91 and 37,179

Step by Step Solution

1. Step 1: Write the proportion equation
   65,478.78 : 90,355.91 = 37,179 : x
2. Step 2: Convert to fraction form
   65,478.78/90,355.91 = 37,179/x
3. Step 3: Cross multiply
   65,478.78x = 90,355.91 × 37,179
4. Step 4: Simplify right side
   65,478.78x = 3,359,342,192.00
5. Step 5: Solve for x
   x = 3,359,342,192.00/65,478.78
6. Step 6: Final answer
   x = 51,304.29