Finding the Fourth Proportional to 89,724.10, 134,586.15 and 89,724.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,724.10 : 134,586.15 = 89,724.10 : x
2. Step 2: Convert to fraction form
   89,724.10/134,586.15 = 89,724.10/x
3. Step 3: Cross multiply
   89,724.10x = 134,586.15 × 89,724.10
4. Step 4: Simplify right side
   89,724.10x = 12,075,621,181.22
5. Step 5: Solve for x
   x = 12,075,621,181.22/89,724.10
6. Step 6: Final answer
   x = 134,586.15