Finding the Fourth Proportional to 78,449.31, 108,262.02 and 42,641.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,449.31 : 108,262.02 = 42,641.31 : x
2. Step 2: Convert to fraction form
   78,449.31/108,262.02 = 42,641.31/x
3. Step 3: Cross multiply
   78,449.31x = 108,262.02 × 42,641.31
4. Step 4: Simplify right side
   78,449.31x = 4,616,434,356.05
5. Step 5: Solve for x
   x = 4,616,434,356.05/78,449.31
6. Step 6: Final answer
   x = 58,846.08