Finding the Fourth Proportional to 112,665.50, 155,513.04 and 64,950.74

Step by Step Solution

1. Step 1: Write the proportion equation
   112,665.50 : 155,513.04 = 64,950.74 : x
2. Step 2: Convert to fraction form
   112,665.50/155,513.04 = 64,950.74/x
3. Step 3: Cross multiply
   112,665.50x = 155,513.04 × 64,950.74
4. Step 4: Simplify right side
   112,665.50x = 10,100,687,027.65
5. Step 5: Solve for x
   x = 10,100,687,027.65/112,665.50
6. Step 6: Final answer
   x = 89,652.00