Finding the Fourth Proportional to 112,976.91, 155,921.96 and 65,230.18

Step by Step Solution

1. Step 1: Write the proportion equation
   112,976.91 : 155,921.96 = 65,230.18 : x
2. Step 2: Convert to fraction form
   112,976.91/155,921.96 = 65,230.18/x
3. Step 3: Cross multiply
   112,976.91x = 155,921.96 × 65,230.18
4. Step 4: Simplify right side
   112,976.91x = 10,170,817,290.02
5. Step 5: Solve for x
   x = 10,170,817,290.02/112,976.91
6. Step 6: Final answer
   x = 90,025.63