Finding the Fourth Proportional to 60,640.72, 83,078.09 and 58,368.03

Step by Step Solution

1. Step 1: Write the proportion equation
   60,640.72 : 83,078.09 = 58,368.03 : x
2. Step 2: Convert to fraction form
   60,640.72/83,078.09 = 58,368.03/x
3. Step 3: Cross multiply
   60,640.72x = 83,078.09 × 58,368.03
4. Step 4: Simplify right side
   60,640.72x = 4,849,104,449.46
5. Step 5: Solve for x
   x = 4,849,104,449.46/60,640.72
6. Step 6: Final answer
   x = 79,964.49