Finding the Fourth Proportional to 76,287.33, 105,282.72 and 42,299.19

Step by Step Solution

1. Step 1: Write the proportion equation
   76,287.33 : 105,282.72 = 42,299.19 : x
2. Step 2: Convert to fraction form
   76,287.33/105,282.72 = 42,299.19/x
3. Step 3: Cross multiply
   76,287.33x = 105,282.72 × 42,299.19
4. Step 4: Simplify right side
   76,287.33x = 4,453,373,777.00
5. Step 5: Solve for x
   x = 4,453,373,777.00/76,287.33
6. Step 6: Final answer
   x = 58,376.32