Finding the Fourth Proportional to 76,459.47, 105,510.39 and 42,470.10

Step by Step Solution

1. Step 1: Write the proportion equation
   76,459.47 : 105,510.39 = 42,470.10 : x
2. Step 2: Convert to fraction form
   76,459.47/105,510.39 = 42,470.10/x
3. Step 3: Cross multiply
   76,459.47x = 105,510.39 × 42,470.10
4. Step 4: Simplify right side
   76,459.47x = 4,481,036,814.34
5. Step 5: Solve for x
   x = 4,481,036,814.34/76,459.47
6. Step 6: Final answer
   x = 58,606.69