Finding the Fourth Proportional to 112,896.60, 155,795.04 and 65,148.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,896.60 : 155,795.04 = 65,148.72 : x
2. Step 2: Convert to fraction form
   112,896.60/155,795.04 = 65,148.72/x
3. Step 3: Cross multiply
   112,896.60x = 155,795.04 × 65,148.72
4. Step 4: Simplify right side
   112,896.60x = 10,149,847,438.35
5. Step 5: Solve for x
   x = 10,149,847,438.35/112,896.60
6. Step 6: Final answer
   x = 89,903.92