Finding the Fourth Proportional to 65,968, 91,036.16 and 39,472

Step by Step Solution

1. Step 1: Write the proportion equation
   65,968 : 91,036.16 = 39,472 : x
2. Step 2: Convert to fraction form
   65,968/91,036.16 = 39,472/x
3. Step 3: Cross multiply
   65,968x = 91,036.16 × 39,472
4. Step 4: Simplify right side
   65,968x = 3,593,379,307.52
5. Step 5: Solve for x
   x = 3,593,379,307.52/65,968
6. Step 6: Final answer
   x = 54,471.55