Finding the Fourth Proportional to 72,896.79, 109,298.52 and 30,765.45

Step by Step Solution

1. Step 1: Write the proportion equation
   72,896.79 : 109,298.52 = 30,765.45 : x
2. Step 2: Convert to fraction form
   72,896.79/109,298.52 = 30,765.45/x
3. Step 3: Cross multiply
   72,896.79x = 109,298.52 × 30,765.45
4. Step 4: Simplify right side
   72,896.79x = 3,362,618,152.13
5. Step 5: Solve for x
   x = 3,362,618,152.13/72,896.79
6. Step 6: Final answer
   x = 46,128.48