Finding the Fourth Proportional to 112,912.77, 155,808.40 and 65,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,912.77 : 155,808.40 = 65,181.50 : x
2. Step 2: Convert to fraction form
   112,912.77/155,808.40 = 65,181.50/x
3. Step 3: Cross multiply
   112,912.77x = 155,808.40 × 65,181.50
4. Step 4: Simplify right side
   112,912.77x = 10,155,825,224.60
5. Step 5: Solve for x
   x = 10,155,825,224.60/112,912.77
6. Step 6: Final answer
   x = 89,943.99