Finding the Fourth Proportional to 76,343.82, 105,354.30 and 42,357.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,343.82 : 105,354.30 = 42,357.47 : x
2. Step 2: Convert to fraction form
   76,343.82/105,354.30 = 42,357.47/x
3. Step 3: Cross multiply
   76,343.82x = 105,354.30 × 42,357.47
4. Step 4: Simplify right side
   76,343.82x = 4,462,541,233.69
5. Step 5: Solve for x
   x = 4,462,541,233.69/76,343.82
6. Step 6: Final answer
   x = 58,453.21