Finding the Fourth Proportional to 86,436.53, 129,410.29 and 45,817.49

Step by Step Solution

1. Step 1: Write the proportion equation
   86,436.53 : 129,410.29 = 45,817.49 : x
2. Step 2: Convert to fraction form
   86,436.53/129,410.29 = 45,817.49/x
3. Step 3: Cross multiply
   86,436.53x = 129,410.29 × 45,817.49
4. Step 4: Simplify right side
   86,436.53x = 5,929,254,492.15
5. Step 5: Solve for x
   x = 5,929,254,492.15/86,436.53
6. Step 6: Final answer
   x = 68,596.63