Finding the Fourth Proportional to 76,210.25, 105,168.73 and 42,217.99

Step by Step Solution

1. Step 1: Write the proportion equation
   76,210.25 : 105,168.73 = 42,217.99 : x
2. Step 2: Convert to fraction form
   76,210.25/105,168.73 = 42,217.99/x
3. Step 3: Cross multiply
   76,210.25x = 105,168.73 × 42,217.99
4. Step 4: Simplify right side
   76,210.25x = 4,440,011,654.52
5. Step 5: Solve for x
   x = 4,440,011,654.52/76,210.25
6. Step 6: Final answer
   x = 58,260.03