Finding the Fourth Proportional to 65,117.90, 89,880.42 and 38,269.06

Step by Step Solution

1. Step 1: Write the proportion equation
   65,117.90 : 89,880.42 = 38,269.06 : x
2. Step 2: Convert to fraction form
   65,117.90/89,880.42 = 38,269.06/x
3. Step 3: Cross multiply
   65,117.90x = 89,880.42 × 38,269.06
4. Step 4: Simplify right side
   65,117.90x = 3,439,639,185.81
5. Step 5: Solve for x
   x = 3,439,639,185.81/65,117.90
6. Step 6: Final answer
   x = 52,821.72