Finding the Fourth Proportional to 112,773.40, 155,643.87 and 65,017.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,773.40 : 155,643.87 = 65,017.42 : x
2. Step 2: Convert to fraction form
   112,773.40/155,643.87 = 65,017.42/x
3. Step 3: Cross multiply
   112,773.40x = 155,643.87 × 65,017.42
4. Step 4: Simplify right side
   112,773.40x = 10,119,562,866.22
5. Step 5: Solve for x
   x = 10,119,562,866.22/112,773.40
6. Step 6: Final answer
   x = 89,733.60