Finding the Fourth Proportional to 76,300.99, 105,294.84 and 42,309.46

Step by Step Solution

1. Step 1: Write the proportion equation
   76,300.99 : 105,294.84 = 42,309.46 : x
2. Step 2: Convert to fraction form
   76,300.99/105,294.84 = 42,309.46/x
3. Step 3: Cross multiply
   76,300.99x = 105,294.84 × 42,309.46
4. Step 4: Simplify right side
   76,300.99x = 4,454,967,821.19
5. Step 5: Solve for x
   x = 4,454,967,821.19/76,300.99
6. Step 6: Final answer
   x = 58,386.76