Finding the Fourth Proportional to 76,349.31, 105,362.31 and 42,358.47

Step by Step Solution

1. Step 1: Write the proportion equation
   76,349.31 : 105,362.31 = 42,358.47 : x
2. Step 2: Convert to fraction form
   76,349.31/105,362.31 = 42,358.47/x
3. Step 3: Cross multiply
   76,349.31x = 105,362.31 × 42,358.47
4. Step 4: Simplify right side
   76,349.31x = 4,462,986,247.27
5. Step 5: Solve for x
   x = 4,462,986,247.27/76,349.31
6. Step 6: Final answer
   x = 58,454.83