Finding the Fourth Proportional to 65,031.98, 89,717.57 and 51,549.13

Step by Step Solution

1. Step 1: Write the proportion equation
   65,031.98 : 89,717.57 = 51,549.13 : x
2. Step 2: Convert to fraction form
   65,031.98/89,717.57 = 51,549.13/x
3. Step 3: Cross multiply
   65,031.98x = 89,717.57 × 51,549.13
4. Step 4: Simplify right side
   65,031.98x = 4,624,862,230.63
5. Step 5: Solve for x
   x = 4,624,862,230.63/65,031.98
6. Step 6: Final answer
   x = 71,116.74