Finding the Fourth Proportional to 112,776.30, 155,631.24 and 65,028.96

Step by Step Solution

1. Step 1: Write the proportion equation
   112,776.30 : 155,631.24 = 65,028.96 : x
2. Step 2: Convert to fraction form
   112,776.30/155,631.24 = 65,028.96/x
3. Step 3: Cross multiply
   112,776.30x = 155,631.24 × 65,028.96
4. Step 4: Simplify right side
   112,776.30x = 10,120,537,680.71
5. Step 5: Solve for x
   x = 10,120,537,680.71/112,776.30
6. Step 6: Final answer
   x = 89,739.93